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<div style="font-family:Times New Roman;">
 <div style="border:none;border-bottom:double windowtext 6.0pt;padding:0pt 0pt 0pt 0pt;"> <p align="left" style="border:none;margin:0pt 0pt 12.0pt;padding:0pt;text-align:left;"><a name="scotch"><font size="2" face="Times New Roman" style="font-size:10.0pt;">As filed with Securities and Exchange Commission on July 6, 2007&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Registration No. 333-</font></a></p> </div>

<p align="center" style="margin:12.0pt 0pt .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">UNITED
STATES<br>
SECURITIES AND EXCHANGE COMMISSION</font></b></p>

<p align="center" style="margin:0pt 0pt 12.0pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Washington,
D.C.&#160; 20549</font></b></p>

<div style="line-height:9.0pt;margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><hr size="1" width="160" noshade color="black" align="center" style="width:120.0pt;"></div>

<p align="center" style="margin:0pt 0pt 12.0pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">FORM
S-8</font></b></p>

<p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">REGISTRATION
STATEMENT</font></b></p>

<p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">UNDER</font></b></p>

<p align="center" style="margin:0pt 0pt 12.0pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">THE
SECURITIES ACT OF 1933</font></b></p>

<div style="line-height:9.0pt;margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><hr size="1" width="160" noshade color="black" align="center" style="width:120.0pt;"></div>

<p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">QUIDEL
CORPORATION</font></b></p>

<p align="center" style="margin:0pt 0pt 12.0pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Exact name of
Registrant as specified in its charter)</font></p>

<div align="center">

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:48.8%;">
  <p align="center" style="font-size:10.0pt;margin:0pt 0pt .0001pt;text-align:center;"><!-- SET mrlNoTableShading --><b>Delaware</b></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:2.38%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:48.8%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">94-2573850</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:48.8%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(State or other
  jurisdiction of<br>
  incorporation or organization)</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:2.38%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:48.8%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(I.R.S. Employer<br>
  Identification No.)</font></p>
  </td>
 </tr>
</table>

</div>

<p style="line-height:1.0pt;margin:0pt 0pt 12.0pt;"><font size="1" face="Times New Roman">&nbsp;</font></p>

<div style="line-height:9.0pt;margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><hr size="1" width="160" noshade color="black" align="center" style="width:120.0pt;"></div>

<p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">10165
McKellar Court</font></b></p>

<p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">San
Diego, California 92121</font></b></p>

<p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">(858)
552-1100</font></b></p>

<p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Address, including zip
code, and telephone number,</font></p>

<p align="center" style="margin:0pt 0pt 12.0pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">including area
code, of Registrant&#146;s Principal Executive Offices)</font></p>

<div style="line-height:9.0pt;margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><hr size="1" width="160" noshade color="black" align="center" style="width:120.0pt;"></div>

<p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">QUIDEL
CORPORATION 2001 EQUITY INCENTIVE PLAN</font></b></p>

<p align="center" style="margin:0pt 0pt 12.0pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Full Title of Plan)</font></p>

<div style="line-height:9.0pt;margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><hr size="1" width="160" noshade color="black" align="center" style="width:120.0pt;"></div>

<p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Caren L.
Mason</font></b></p>

<p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">President
and Chief Executive Officer</font></b></p>

<p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">QUIDEL
CORPORATION</font></b></p>

<p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">10165
McKellar Court</font></b></p>

<p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">San
Diego, California 92121</font></b></p>

<p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">(858)
552-1100</font></b></p>

<p align="center" style="margin:0pt 0pt 12.0pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Name, address,
including zip code, and telephone number, including area code, of agent for
service)</font></p>

<p align="center" style="margin:0pt 0pt 12.0pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Copies to:</font></p>

<p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Mark W.
Shurtleff</font></b></p>

<p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">GIBSON,
DUNN &amp; CRUTCHER LLP</font></b></p>

<p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">4 Park
Plaza, Suite 1700</font></b></p>

<p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Irvine,
California 92614-8557</font></b></p>

<p align="center" style="margin:0pt 0pt 12.0pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">(949)
451-3800</font></b></p>

<div style="line-height:9.0pt;margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><hr size="1" width="160" noshade color="black" align="center" style="width:120.0pt;"></div>

<p align="center" style="margin:6.0pt 0pt 12.0pt 27.35pt;text-align:center;text-indent:-27.35pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">CALCULATION
OF REGISTRATION FEE</font></b></p>

<table border="1" cellspacing="0" cellpadding="0" width="100%" style="border:none;border-collapse:collapse;width:100.0%;">
 <tr style="page-break-inside:avoid;">
  <td width="34%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 1.5pt;padding:0pt .7pt 0pt 0pt;width:34.4%;">
  <p style="font-size:8.0pt;font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><!-- SET mrlNoTableShading -->Title&nbsp;of&nbsp;Each&nbsp;Class&nbsp;of&nbsp;Securities<br>
  to&nbsp;be&nbsp;Registered</p>
  </td>
  <td width="2%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 1.5pt;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></b></p>
  </td>
  <td width="13%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 1.5pt;padding:0pt .7pt 0pt 0pt;width:13.94%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;">Amount&nbsp;to&nbsp;be<br>
  Registered(1)(2)</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 1.5pt;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></b></p>
  </td>
  <td width="13%" colspan="2" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 1.5pt;padding:0pt .7pt 0pt 0pt;width:13.94%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;">Proposed&nbsp;Maximum<br>
  Offering&nbsp;Price<br>
  Per&nbsp;Share(3)</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 1.5pt;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></b></p>
  </td>
  <td width="13%" colspan="2" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 1.5pt;padding:0pt .7pt 0pt 0pt;width:13.94%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;">Proposed&nbsp;Maximum<br>
  Aggregate&nbsp;Offering<br>
  Price(3)</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 1.5pt;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></b></p>
  </td>
  <td width="13%" colspan="2" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 1.5pt;padding:0pt .7pt 0pt 0pt;width:13.94%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;">Amount&nbsp;of<br>
  Registration&nbsp;Fee</font></b></p>
  </td>
  <td width="0%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 1.5pt;padding:0pt .7pt 0pt 0pt;width:.34%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></b></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="34%" valign="top" style="border:none;border-bottom:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:34.4%;">
  <p style="margin:0pt 0pt .0001pt 10.0pt;page-break-after:avoid;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Common Stock, par value
  $0.001 per share</font></p>
  </td>
  <td width="2%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;page-break-after:avoid;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="13%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:13.94%;">
  <p style="margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2,000,000</font></p>
  </td>
  <td width="2%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;page-break-after:avoid;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="1%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0pt 0pt 0pt 0pt;width:1.0%;">
  <p align="left" style="margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">$</font></p>
  </td>
  <td width="12%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:12.94%;">
  <p style="margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">17.685</font></p>
  </td>
  <td width="2%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="1%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0pt 0pt 0pt 0pt;width:1.0%;">
  <p align="left" style="margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">$</font></p>
  </td>
  <td width="12%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:12.94%;">
  <p style="margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">35,370,000</font></p>
  </td>
  <td width="2%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="1%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0pt 0pt 0pt 0pt;width:1.0%;">
  <p align="left" style="margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">$</font></p>
  </td>
  <td width="12%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:12.94%;">
  <p style="margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">1,085.86</font></p>
  </td>
  <td width="0%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:.34%;">
  <p style="margin:0pt 0pt .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr height="0">
  <td width="257" style="border:none;"></td>
  <td width="18" style="border:none;"></td>
  <td width="104" style="border:none;"></td>
  <td width="18" style="border:none;"></td>
  <td width="7" style="border:none;"></td>
  <td width="97" style="border:none;"></td>
  <td width="18" style="border:none;"></td>
  <td width="7" style="border:none;"></td>
  <td width="97" style="border:none;"></td>
  <td width="18" style="border:none;"></td>
  <td width="7" style="border:none;"></td>
  <td width="97" style="border:none;"></td>
  <td width="2" style="border:none;"></td>
 </tr>
</table>

<p style="line-height:1.0pt;margin:0pt 0pt .0001pt;"><font size="1" face="Times New Roman">&nbsp;</font></p>

<p style="font-size:10.0pt;margin:0pt 0pt 6.0pt 36.0pt;text-indent:-36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(1)</font><i><font size="1" style="font-size:3.0pt;font-style:italic;position:relative;top:-2.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font></i>Represents
an additional 2,000,000 shares of Quidel&#146;s common stock issuable under the
Quidel Corporation 2001 Equity Incentive Plan.</p>

<p style="font-size:10.0pt;margin:0pt 0pt 6.0pt 36.0pt;text-indent:-36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(2)</font><i><font size="1" style="font-size:3.0pt;font-style:italic;position:relative;top:-2.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font></i>Also
includes associated preferred stock purchase rights to purchase shares of
Quidel&#146;s common stock, which rights are not currently separable from the shares
of common stock and are not currently exercisable. Pursuant to
Rule&nbsp;416(a), this Registration Statement also covers shares issued
pursuant to antidilution provisions set forth in the Quidel Corporation 2001
Equity Incentive Plan.</p>

<p style="font-size:10.0pt;margin:0pt 0pt 6.0pt 36.0pt;text-indent:-36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(3)</font><i><font size="1" style="font-size:3.0pt;font-style:italic;position:relative;top:-2.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font></i>Estimated
solely for the purpose of calculating the registration fee pursuant to
Rules&nbsp;457(c) and 457(h) and based on the average of the high and the low
price of Quidel&#146;s common stock as reported on July 2, 2007 on the Nasdaq Global
Market.</p>


 <div style="border:none;border-bottom:double windowtext 6.0pt;padding:0pt 0pt 0pt 0pt;"> <p style="border:none;margin:0pt 0pt .0001pt;padding:0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p> </div>
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<h1 align="center" style="font-weight:normal;margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">INTRODUCTION</font></b></h1>

<p style="margin:0pt 0pt 12.0pt;text-indent:18.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">This Registration Statement on Form&nbsp;S-8 is
filed by Quidel Corporation, a Delaware corporation (&#147;Quidel&#148;), to register
2,000,000 additional shares of Quidel common stock issuable under the Quidel
Corporation 2001 Equity Incentive Plan.</font></p>

<h1 align="center" style="font-weight:normal;margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">PART I<br>
INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS</font></b></h1>

<h2 style="font-family:Times New Roman;font-size:10.0pt;font-weight:normal;margin:0pt 0pt 12.0pt 36.0pt;page-break-after:avoid;text-indent:-36.0pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 1.</font></b><b><font size="1" style="font-size:3.0pt;font-weight:bold;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Plan Information.*</b></h2>

<h2 style="font-family:Times New Roman;font-size:10.0pt;font-weight:normal;margin:0pt 0pt 12.0pt;page-break-after:avoid;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 2.</font></b><b><font size="1" style="font-size:3.0pt;font-weight:bold;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Registrant Information
and Employee Plan Annual Information.*</b></h2>

<div style="margin:0pt 0pt .0001pt;page-break-after:avoid;"><hr size="1" width="160" noshade color="black" align="left" style="width:120.0pt;"></div>

<p style="font-family:Times New Roman;font-size:10.0pt;margin:0pt 0pt 12.0pt 36.0pt;text-indent:-36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">*</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Information
required by Part&nbsp;I of Form&nbsp;S-8 to be contained in the
Section&nbsp;10(a) prospectus is omitted from this registration statement in
accordance with Rule&nbsp;428 under the Securities Act of 1933, as amended (the
&#147;Securities Act&#148;), and the Note to Part&nbsp;I of Form&nbsp;S-8.</p>

<h1 align="center" style="font-weight:normal;margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">PART II<br>
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</font></b></h1>

<h2 style="font-family:Times New Roman;font-size:10.0pt;font-weight:normal;margin:0pt 0pt 12.0pt;page-break-after:avoid;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item
3.</font></b><b><font size="1" style="font-size:3.0pt;font-weight:bold;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Incorporation
of Documents by Reference.</b></h2>

<p style="margin:0pt 0pt 12.0pt;text-indent:18.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The following documents, which previously have been
filed by Quidel with the Securities and Exchange Commission (the &#147;Commission&#148;),
are incorporated herein by reference and made a part hereof:</font></p>

<p style="font-family:Times New Roman;font-size:10.0pt;margin:0pt 0pt 12.0pt 72.0pt;text-indent:-36.0pt;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">a)</font></i><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Quidel&#146;s Annual
Report on Form 10-K for the fiscal year ended December&nbsp;31, 2006;</p>

<p style="font-family:Times New Roman;font-size:10.0pt;margin:0pt 0pt 12.0pt 72.0pt;text-indent:-36.0pt;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">b)</font></i><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Quidel&#146;s Quarterly
Report on Form 10-Q for the quarter ended March&nbsp;31, 2007;</p>

<p style="font-family:Times New Roman;font-size:10.0pt;margin:0pt 0pt 12.0pt 72.0pt;text-indent:-36.0pt;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">c)</font></i><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>All other reports
filed by Quidel pursuant to Section&nbsp;13(a) or 15(d) of the Securities
Exchange Act of 1934, as amended (the &#147;Exchange Act&#148;), since the end of the
fiscal year ended December&nbsp;31, 2006;</p>

<p style="font-family:Times New Roman;font-size:10.0pt;margin:0pt 0pt 12.0pt 72.0pt;text-indent:-36.0pt;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">d)</font></i><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>The description of
Quidel&#146;s common stock contained in the Registration Statement on Form&nbsp;8-A
dated February&nbsp;28, 1983, including any amendment or report filed for the
purpose of updating such description; and</p>

<p style="font-family:Times New Roman;font-size:10.0pt;margin:0pt 0pt 12.0pt 72.0pt;text-indent:-36.0pt;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">e)</font></i><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>The description of
Quidel&#146;s preferred stock purchase rights contained in the Registration
Statement on Form&nbsp;8-A filed on January&nbsp;14, 1997, including any
amendment or report filed for the purpose of updating such description.</p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">All documents
filed by Quidel pursuant to Sections&nbsp;13(a), 13(c), 14 and 15(d) of the
Securities Exchange Act, subsequent to the date of this Registration Statement
and prior to the filing of a post-effective amendment hereto that
indicates that all securities offered hereunder have been sold or that
deregisters all securities then remaining unsold shall be deemed to be
incorporated by reference herein and to be a part hereof from the date of
filing of such documents.&#160; Nothing in
this Registration Statement shall be deemed to incorporate information
furnished but not filed with the Commission.</font></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">For purposes of
this Registration Statement, any statement contained in a document incorporated
or deemed to be incorporated herein by reference shall be deemed to be modified
or superseded to the extent that a statement contained herein or in any other
subsequently filed document that also is or is deemed to be incorporated herein
by reference modifies or supersedes such statement in such document.&#160; Any statement so modified or superseded shall
not be deemed, except as so modified or superseded, to constitute a part of
this Registration Statement.</font></p>

<h2 style="font-family:Times New Roman;font-size:10.0pt;font-weight:normal;margin:0pt 0pt 12.0pt;page-break-after:avoid;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item
4.</font></b><b><font size="1" style="font-size:3.0pt;font-weight:bold;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Description
of Securities.</b></h2>

<p style="margin:0pt 0pt 12.0pt;text-indent:18.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Not applicable.</font></p>


 <p style="margin:24.0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2</font></p> <br><hr size="3" width="100%" noshade color="#010101" align="center">

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<h2 style="font-family:Times New Roman;font-size:10.0pt;font-weight:normal;margin:0pt 0pt 12.0pt;page-break-after:avoid;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item
5.</font></b><b><font size="1" style="font-size:3.0pt;font-weight:bold;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Interests
of Named Experts and Counsel.</b></h2>

<p style="margin:0pt 0pt 12.0pt;text-indent:18.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Not applicable.</font></p>

<h2 style="font-family:Times New Roman;font-size:10.0pt;font-weight:normal;margin:0pt 0pt 12.0pt;page-break-after:avoid;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item
6.</font></b><b><font size="1" style="font-size:3.0pt;font-weight:bold;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Indemnification
of Directors and Officers.</b></h2>

<p style="margin:0pt 0pt 12.0pt;text-indent:18.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Quidel is a Delaware corporation.&#160; Section 145(a) of the General Corporation Law
of the State of Delaware (the &#147;DGCL&#148;) provides that a Delaware corporation may
indemnify any person who was or is a party or is threatened to be made a party
to any threatened, pending or completed action, suit or proceeding, whether
civil, criminal, administrative or investigative, other than an action by or in
the right of the corporation, by reason of the fact that such person is or was a
director, officer, employee or agent of the corporation or is or was serving at
the request of the corporation as a director, officer, employee or agent of
another corporation, partnership, joint venture, trust or enterprise, against
expenses (including attorneys&#146; fees), judgments, fines and amounts paid in
settlement actually and reasonably incurred by such person in connection with
such action, suit or proceeding if he or she acted in good faith and in a
manner he or she reasonably believed to be in or not opposed to the best
interests of the corporation, and, with respect to any criminal action or
proceeding, had no reasonable cause to believe his or her conduct was unlawful.</font></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:18.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Section&nbsp;145(b) of the DGCL provides that a
Delaware corporation may indemnify any person who was or is a party or is
threatened to be made a party to any threatened, pending or completed action or
suit by or in the right of a corporation to procure a judgment in its favor by
reason of the fact that such person acted in any of the capacities set forth
above, against expenses (including attorneys&#146; fees) actually and reasonably
incurred by such person in connection with the defense or settlement of such
action or suit if he or she acted under similar standards to those set forth
above, except that no indemnification may be made in respect to any claim,
issue or matter as to which such person shall have been adjudged to be liable
to the corporation unless and only to the extent that the Chancery Court or
court in which such action or suit was brought shall determine that despite the
adjudication of liability, but in view of all the circumstances of the case,
such person is fairly and reasonably entitled to be indemnified for such
expenses which the Court of Chancery or such other court shall deem proper.</font></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:18.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Further subsections of DGCL Section 145 provide that:</font></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(1)&#160; to the extent a present or former director or
officer of a corporation has been successful on the merits or otherwise in the
defense of any action, suit or proceeding referred to in subsections (a) and
(b) of Section 145 or in the defense of any claim, issue or matter therein,
such person shall be indemnified against expenses (including attorneys&#146; fees)
actually and reasonably incurred by such person in connection therewith;</font></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(2)&#160; any indemnification under subsections (a) and
(b) of Section 145 (unless ordered by a court) shall be made by the corporation
only as authorized in the specific case upon a determination that
indemnification of the present or former director, officer, employee or agent
is proper in the circumstances because the person has met the applicable
standard of conduct set forth in subsections (a)&nbsp;and (b) of Section 145.
Such determination shall be made, with respect to a person who is a director or
officer at the time of such determination, (1) by a majority vote of the
directors who are not parties to such action, suit or proceeding, even though
less than a quorum, or (2) by a committee of such directors designated by
majority vote of such directors, even though less than a quorum, or (3) if
there are no such directors, or if such directors so direct, by independent
legal counsel in a written opinion, or (4) by the stockholders;</font></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(3)&#160; expenses (including attorneys&#146; fees) incurred
by an officer or director in defending any civil, criminal, administrative or
investigative action, suit or proceeding may be paid by the corporation in
advance of the final disposition of such action, suit or proceeding upon
receipt of an undertaking by or on behalf of such director or officer to repay
such amount if it shall ultimately be determined that such person is not
entitled to be indemnified by the corporation as authorized in Section 145.
Such expenses (including attorneys&#146; fees) incurred by former directors and
officers or other employees and agents may be so paid upon such terms and
conditions, if any, as the corporation deems appropriate;</font></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(4)&#160; the indemnification and advancement of
expenses provided by, or granted pursuant to, Section 145 shall not be deemed
exclusive of any other rights to which those seeking indemnification or
advancement of expenses may be entitled under any bylaw, agreement, vote of
stockholder or disinterested directors or otherwise, both as to action in such
person&#146;s official capacity and as to action in another capacity while holding
such office; and</font></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(5)&#160; the corporation shall have the power to
purchase and maintain insurance on behalf of any person who is or was a
director, officer, employee or agent of the corporation, or is or was serving
at the request of the corporation as a director, officer, employee or agent of
another corporation, partnership, joint venture, trust or other enterprise,
against any liability asserted against such person and</font></p>


 <p style="margin:24.0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3</font></p> <br><hr size="3" width="100%" noshade color="#010101" align="center">

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<p style="margin:0pt 0pt 12.0pt;text-indent:0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">incurred by such person
in any such capacity, or arising out of such person&#146;s status as such, whether
or not the corporation would have the power to indemnify such person against
such liability under Section 145.</font></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:18.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Article 10 of the Company&#146;s Certificate of
Incorporation relieves its directors from monetary damages to the Company or
its stockholders for breach of such director&#146;s fiduciary duty as a director to
the fullest extent permitted by the DGCL. Under Section 102(b)(7) of the DGCL,
a corporation may relieve its directors from personal liability to such
corporation or its stockholders for monetary damages for any breach of their
fiduciary duty as directors except (i) for a breach of the duty of loyalty,
(ii) for failure to act in good faith, (iii) for intentional misconduct or
knowing violation of law, (iv) for willful or negligent violations of certain
provisions in the DGCL imposing certain requirements with respect to stock
repurchases, redemptions and dividends, or (v) for any transactions from which
the director derived an improper personal benefit.&#160; Depending upon the character of the
proceeding, under Delaware law, the Company may indemnify against expenses
(including attorneys&#146; fees), judgments, fines and amounts paid in settlement
actually and reasonably incurred in connection with any action, suit or
proceeding if the person indemnified acted in good faith and in a manner he or
she reasonably believed to be in or not opposed to the best interest of the
Company.</font></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:18.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The Company&#146;s Bylaws provide that the Company shall
indemnify any person who was or is a party, or is threatened to be made a party
to any threatened, pending or completed action, suit or proceeding, whether or
not by or in the right of the Company, by reason of the fact that he is or was
a director of officer of the Company, or is or was serving at the request of
the Company as a director, officer, employee or agent of another corporation,
partnership, joint venture, trust or other enterprise.</font></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:18.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">To implement the provisions of the DGCL and our
Bylaws, we have entered into Indemnification Agreements with each of our
directors and officers.&#160; The provisions
of the Indemnification Agreements parallel the portions of the Bylaws described
above.&#160; Absent the Indemnification
Agreements, the indemnification that might be available to directors and
officers could be changed by amendment to our Certificate of Incorporation and
Bylaws.&#160; In the event of changes, after
the date of such Indemnification Agreements, in any applicable law, statute or
rule which expands the right of a Delaware corporation to indemnify a member of
its board of directors or an officer, such changes shall be, <i>ipso facto</i>, within the purview of the
rights and obligations under the Indemnification Agreements.&#160; We may seek directors and officers liability
insurance against the cost of defense, settlement or payment of a judgment
under certain circumstances.</font></p>

<h2 style="font-family:Times New Roman;font-size:10.0pt;font-weight:normal;margin:0pt 0pt 12.0pt;page-break-after:avoid;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item
7.</font></b><b><font size="1" style="font-size:3.0pt;font-weight:bold;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Exemption
from Registration Claimed.</b></h2>

<p style="margin:0pt 0pt 12.0pt;text-indent:18.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Not applicable.</font></p>

<h2 style="font-family:Times New Roman;font-size:10.0pt;font-weight:normal;margin:0pt 0pt 12.0pt;page-break-after:avoid;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item
8.</font></b><b><font size="1" style="font-size:3.0pt;font-weight:bold;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Exhibits.</b></h2>

<table border="1" cellspacing="0" cellpadding="0" width="100%" style="border:none;border-collapse:collapse;font-family:Times New Roman;width:100.0%;">
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:8.34%;">
  <p align="left" style="font-size:8.0pt;font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;text-align:left;"><!-- SET mrlNoTableShading -->Exhibit No.</p>
  </td>
  <td width="2%" valign="bottom" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.74%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></b></p>
  </td>
  <td width="88%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:88.92%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;">Description</font></b></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.34%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.74%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:88.92%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.34%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4.1</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.74%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:88.92%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Certificate of Incorporation of Quidel Corporation,
  as amended (filed as Exhibit&nbsp;3.1 to Quidel&#146;s current Report on Form 8-K
  dated February&nbsp;26, 1991 and incorporated herein by reference).</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.34%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.74%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:88.92%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.34%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4.2</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.74%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:88.92%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Certificate of Designations of the Series&nbsp;B
  Preferred Stock of Quidel Corporation (filed as Exhibit&nbsp;4.1 to the
  Quidel&#146;s Current Report on Form 8-K dated January&nbsp;5, 1995, and
  incorporated herein by reference).</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.34%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.74%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:88.92%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.34%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4.3</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.74%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:88.92%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Certificate of Designation of Rights, Preferences,
  Privileges and Restrictions of series&nbsp;C Junior Participating Preferred
  Stock of Quidel Corporation (filed as Exhibit&nbsp;A of Exhibit&nbsp;1 to
  Quidel&#146;s Registration Statement on Form&nbsp;8-A dated January&nbsp;8,
  1997, and incorporated herein by reference).</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.34%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.74%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:88.92%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.34%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4.4</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.74%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:88.92%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Bylaws, as amended, of Quidel Corporation (filed as
  Exhibit&nbsp;3.2 to Quidel&#146;s Current Report on Form 8-K dated August&nbsp;9,
  2000, and incorporated herein by reference).</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.34%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.74%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:88.92%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.34%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4.5</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.74%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:88.92%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Amended and Restated Rights Agreement dated as of
  December&nbsp;29, 2006 between Quidel Corporation and American Stock Transfer
  and Trust Company, as Rights Agent (filed as Exhibit&nbsp;4.1 to Quidel&#146;s
  Current Report on Form&nbsp;8-K dated December 29, 2006, and incorporated
  herein by reference).</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.34%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.74%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:88.92%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.34%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">5</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.74%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:88.92%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Opinion of Gibson, Dunn &amp; Crutcher LLP.</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.34%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.74%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:88.92%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.34%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">23.1</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.74%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:88.92%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Consent of Ernst &amp; Young LLP, Independent Registered
  Public Accounting Firm.</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.34%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.74%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:88.92%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.34%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">23.2</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.74%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:88.92%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Consent of Gibson, Dunn &amp; Crutcher LLP
  (contained in Exhibit&nbsp;5 hereto).</font></p>
  </td>
 </tr>
</table>

<p style="line-height:1.0pt;margin:0pt 0pt 12.0pt;"><font size="1" face="Times New Roman">&nbsp;</font></p>


 <p style="margin:24.0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4</font></p> <br><hr size="3" width="100%" noshade color="#010101" align="center">

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<br clear="all" style="page-break-before:always;">



<p style="margin:0pt 0pt .0001pt;"><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;font-family:Times New Roman;width:100.0%;">
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:8.22%;">
  <p style="font-size:10.0pt;margin:0pt 0pt .0001pt;"><!-- SET mrlNoTableShading -->24</p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.62%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:89.16%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Power of Attorney (contained on signature page
  hereto).</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:8.22%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.62%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:89.16%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:8.22%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">99.1</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.62%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:89.16%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Amended and Restated Quidel Corporation Equity
  Incentive Plan (filed as Exhibit 10.1 to Quidel&#146;s Current Report on Form 8-K
  dated May 7, 2007, and incorporated herein by reference).</font></p>
  </td>
 </tr>
</table>

<p style="line-height:1.0pt;margin:0pt 0pt 12.0pt;"><font size="1" face="Times New Roman">&nbsp;</font></p>

<h2 style="font-family:Times New Roman;font-size:10.0pt;font-weight:normal;margin:0pt 0pt 12.0pt;page-break-after:avoid;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item
9.</font></b><b><font size="1" style="font-size:3.0pt;font-weight:bold;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Undertakings.</b></h2>

<p style="font-family:Times New Roman;font-size:10.0pt;margin:0pt 0pt 12.0pt;text-indent:18.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(a)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>The
undersigned registrant hereby undertakes:</p>

<p style="font-family:Times New Roman;font-size:10.0pt;margin:0pt 0pt 12.0pt 18.0pt;text-indent:18.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(1)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>To
file, during any period in which offers or sales are being made, a
post-effective amendment to this Registration Statement:</p>

<p style="font-family:Times New Roman;font-size:10.0pt;margin:0pt 0pt 12.0pt 36.0pt;text-indent:18.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(i)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>To
include any prospectus required by Section&nbsp;10(a)(3) of the Securities Act;</p>

<p style="font-family:Times New Roman;font-size:10.0pt;margin:0pt 0pt 12.0pt 36.0pt;text-indent:18.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(ii)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>To reflect
in the prospectus any facts or events arising after the effective date of the
Registration Statement (or the most recent post-effective amendment thereof)
which, individually or in the aggregate, represent a fundamental change in the
information set forth in the Registration Statement;</p>

<p style="font-family:Times New Roman;font-size:10.0pt;margin:0pt 0pt 12.0pt 36.0pt;text-indent:18.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(iii)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160; </font>To
include any material information with respect to the plan of distribution not
previously disclosed in the Registration Statement or any material change to
such information in the Registration Statement;</p>

<p style="font-family:Times New Roman;font-size:10.0pt;margin:0pt 0pt 12.0pt;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">provided, however,</font></i>
that paragraphs (a)(1)(i) and (a)(1)(ii) do not apply if the information
required to be included in a post-effective amendment by those paragraphs is
contained in periodic reports filed with or furnished to the Commission by the
registrant pursuant to Section&nbsp;13 or Section&nbsp;15(d) of the Exchange
Act that are incorporated by reference in the Registration Statement.</p>

<p style="font-family:Times New Roman;font-size:10.0pt;margin:0pt 0pt 12.0pt 18.0pt;text-indent:18.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(2)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>That,
for the purpose of determining any liability under the Securities Act, each
such post-effective amendment shall be deemed to be a new registration
statement relating to the securities offered therein, and the offering of such
securities at that time shall be deemed to be the initial <i>bona fide</i>
offering thereof.</p>

<p style="font-family:Times New Roman;font-size:10.0pt;margin:0pt 0pt 12.0pt 18.0pt;text-indent:18.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(3)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>To
remove from registration by means of a post-effective amendment any of the
securities being registered which remain unsold at the termination of the
offering.</p>

<p style="font-family:Times New Roman;font-size:10.0pt;margin:0pt 0pt 12.0pt;text-indent:18.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(b)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>The
undersigned registrant hereby undertakes that, for purposes of determining any
liability under the Securities Act, each filing of the registrant&#146;s annual
report pursuant to Section&nbsp;13(a) or 15(d) of the Exchange Act (and, where
applicable, each filing of an employee benefit plan&#146;s annual report pursuant to
Section&nbsp;15(d) of the Exchange Act) that is incorporated by reference in
the Registration Statement shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of such securities
at that time shall be deemed to be the initial <i>bona fide</i>
offering thereof.</p>

<p style="font-family:Times New Roman;font-size:10.0pt;margin:0pt 0pt 12.0pt;text-indent:18.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(c)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Insofar
as indemnification for liabilities arising under the Securities Act may be
permitted to directors, officers and controlling persons of the registrant
pursuant to the foregoing provisions, or otherwise, the registrant has been
advised that in the opinion of the Commission such indemnification is against
public policy as expressed in the Securities Act and is, therefore,
unenforceable. &#160;In the event that a claim
for indemnification against such liabilities (other than the payment by the
registrant of expenses incurred or paid by a director, officer or controlling
person of the registrant in the successful defense of any action, suit or proceeding)
is asserted by such director, officer or controlling person in connection with
the securities being registered, the registrant will, unless in the opinion of
its counsel the matter has been settled by controlling precedent, submit to a
court of appropriate jurisdiction the question of whether such indemnification
by it is against public policy as expressed in the Securities Act and will be
governed by a final adjudication of such issue.</p>


 <p style="margin:24.0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">5</font></p> <br><hr size="3" width="100%" noshade color="#010101" align="center">

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<h1 align="center" style="font-weight:normal;margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">SIGNATURES</font></b></h1>

<p style="margin:9.0pt 0pt 12.0pt;text-indent:18.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pursuant to the requirements of the Securities Act of 1933, the
registrant certifies that it has reasonable grounds to believe that it meets
all of the requirements for filing on Form&nbsp;S-8 and has duly caused
this Registration Statement to be signed on its behalf by the undersigned,
thereunto duly authorized, in the City of San Diego, State of California, on
July 6, 2007.</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;font-family:Times New Roman;width:100.0%;">
 <tr style="page-break-inside:avoid;">
  <td width="40%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:40.88%;">
  <p style="font-size:10.0pt;margin:0pt 0pt .0001pt;"><!-- SET mrlNoTableShading --></p>
  </td>
  <td width="59%" colspan="4" valign="top" style="padding:0pt .7pt 0pt 0pt;width:59.12%;">
  <p style="margin:0pt 0pt .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">QUIDEL CORPORATION</font></b></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="40%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:40.88%;">
  <p style="margin:0pt 0pt .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="59%" colspan="4" valign="top" style="padding:0pt .7pt 0pt 0pt;width:59.12%;">
  <p style="margin:0pt 0pt .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="40%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:40.88%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.4%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="35%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:35.4%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ Caren L. Mason</font></p>
  </td>
  <td width="19%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:19.32%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="40%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:40.88%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.4%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:6.42%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>
  </td>
  <td width="48%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:48.32%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Caren L. Mason</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="40%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:40.88%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.4%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:6.42%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:</font></p>
  </td>
  <td width="48%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:48.32%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">President, Chief Executive Officer and Director</font></p>
  </td>
 </tr>
 <tr height="0">
  <td width="306" style="border:none;"></td>
  <td width="33" style="border:none;"></td>
  <td width="48" style="border:none;"></td>
  <td width="217" style="border:none;"></td>
  <td width="145" style="border:none;"></td>
 </tr>
</table>

<p style="line-height:1.0pt;margin:0pt 0pt 12.0pt;"><font size="1" face="Times New Roman">&nbsp;</font></p>

<h1 align="center" style="font-weight:normal;margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">POWER OF
ATTORNEY</font></b></h1>

<p style="margin:9.0pt 0pt 12.0pt;text-indent:18.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature
appears below does hereby constitute and appoint Caren L. Mason and John M.
Radak, and each of them with full power of substitution and with full power to
act without the other, his or her true and lawful attorney-in-fact and agent to
act for him or her in his or her name, place and stead, in any and all
capacities, to sign any and all amendments (including post-effective
amendments) to this Registration Statement, and to file this Registration Statement,
with all exhibits thereto, and other documents in connection therewith, with
the Securities and Exchange Commission, granting unto said attorneys-in-fact
and agents, and each of them, full power and authority to do and perform each
and every act and thing requisite and necessary to be done in order to
effectuate the same as fully, to all intents and purposes, as they, he or she
might or could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents may lawfully do or cause to be done by virtue
hereof.</font></p>

<p style="margin:9.0pt 0pt 12.0pt;text-indent:18.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed below by the following persons in the
capacities indicated below and on the date indicated.</font></p>

<p style="margin:0pt 0pt 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">July 6, 2007</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;font-family:Times New Roman;width:100.0%;">
 <tr style="page-break-inside:avoid;">
  <td width="46%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:46.52%;">
  <p style="font-size:10.0pt;margin:0pt 0pt .0001pt;"><!-- SET mrlNoTableShading --></p>
  </td>
  <td width="53%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:53.48%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="44%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:44.62%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ Caren L. Mason</font></p>
  </td>
  <td width="1%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:1.9%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="40%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:40.82%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ Douglas S.
  Harrington</font></p>
  </td>
  <td width="12%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:12.66%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="46%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:46.52%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Caren L. Mason</font></p>
  </td>
  <td width="40%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:40.82%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Douglas S.
  Harrington, M.D.</font></p>
  </td>
  <td width="12%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:12.66%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="46%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:46.52%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">Chief Executive Officer</font></i></p>
  </td>
  <td width="40%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:40.82%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">Director</font></i></p>
  </td>
  <td width="12%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:12.66%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:1.0pt;font-style:italic;">&nbsp;</font></i></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="46%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:46.52%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">(Principal Executive Officer);</font></i></p>
  </td>
  <td width="53%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:53.48%;">
  <p style="margin:0pt 0pt .0001pt;"><i><font size="2" face="Times New Roman" style="font-size:1.0pt;font-style:italic;">&nbsp;</font></i></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="46%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:46.52%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">&nbsp;</font></i></p>
  </td>
  <td width="53%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:53.48%;">
  <p style="margin:0pt 0pt .0001pt;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">&nbsp;</font></i></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="46%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:46.52%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">Director</font></i></p>
  </td>
  <td width="53%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:53.48%;">
  <p style="margin:0pt 0pt .0001pt;"><i><font size="2" face="Times New Roman" style="font-size:1.0pt;font-style:italic;">&nbsp;</font></i></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="46%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:46.52%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="53%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:53.48%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="46%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:46.52%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="53%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:53.48%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="44%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:44.62%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ John M. Radak</font></p>
  </td>
  <td width="1%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:1.9%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="40%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:40.82%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ Rod F.
  Dammeyer</font></p>
  </td>
  <td width="12%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:12.66%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="46%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:46.52%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="40%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:40.82%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="12%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:12.66%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="46%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:46.52%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">John M. Radak</font></p>
  </td>
  <td width="40%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:40.82%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rod F. Dammeyer</font></p>
  </td>
  <td width="12%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:12.66%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="46%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:46.52%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">Chief Financial Officer</font></i></p>
  </td>
  <td width="40%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:40.82%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">Director</font></i></p>
  </td>
  <td width="12%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:12.66%;">
  <p style="margin:0pt 0pt .0001pt;"><i><font size="2" face="Times New Roman" style="font-size:1.0pt;font-style:italic;">&nbsp;</font></i></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="46%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:46.52%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">(Principal Financial Officer and Accounting
  Officer)</font></i></p>
  </td>
  <td width="53%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:53.48%;">
  <p style="margin:0pt 0pt .0001pt;"><i><font size="2" face="Times New Roman" style="font-size:1.0pt;font-style:italic;">&nbsp;</font></i></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="46%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:46.52%;">
  <p style="margin:0pt 0pt .0001pt;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">&nbsp;</font></i></p>
  </td>
  <td width="53%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:53.48%;">
  <p style="margin:0pt 0pt .0001pt;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">&nbsp;</font></i></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="46%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:46.52%;">
  <p style="margin:0pt 0pt .0001pt;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">&nbsp;</font></i></p>
  </td>
  <td width="53%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:53.48%;">
  <p style="margin:0pt 0pt .0001pt;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">&nbsp;</font></i></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="44%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:44.62%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ Mark A. Pulido</font></p>
  </td>
  <td width="1%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:1.9%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="40%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:40.82%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ Mary Lake
  Polan</font></p>
  </td>
  <td width="12%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:12.66%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="46%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:46.52%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="40%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:40.82%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="12%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:12.66%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="46%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:46.52%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Mark A. Pulido</font></p>
  </td>
  <td width="40%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:40.82%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Mary Lake Polan,
  M.D., Ph.D., M.P.H.</font></p>
  </td>
  <td width="12%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:12.66%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="46%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:46.52%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">Chairman of the Board</font></i></p>
  </td>
  <td width="40%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:40.82%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">Director</font></i></p>
  </td>
  <td width="12%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:12.66%;">
  <p style="margin:0pt 0pt .0001pt;"><i><font size="2" face="Times New Roman" style="font-size:1.0pt;font-style:italic;">&nbsp;</font></i></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="46%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:46.52%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">Director</font></i></p>
  </td>
  <td width="53%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:53.48%;">
  <p style="margin:0pt 0pt .0001pt;"><i><font size="2" face="Times New Roman" style="font-size:1.0pt;font-style:italic;">&nbsp;</font></i></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="46%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:46.52%;">
  <p style="margin:0pt 0pt .0001pt;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">&nbsp;</font></i></p>
  </td>
  <td width="53%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:53.48%;">
  <p style="margin:0pt 0pt .0001pt;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">&nbsp;</font></i></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="46%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:46.52%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="53%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:53.48%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="44%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:44.62%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ Thomas D. Brown</font></p>
  </td>
  <td width="1%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:1.9%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="40%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:40.82%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ Jack W.
  Schuler</font></p>
  </td>
  <td width="12%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:12.66%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="46%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:46.52%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="40%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:40.82%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="12%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:12.66%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="46%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:46.52%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Thomas D. Brown</font></p>
  </td>
  <td width="40%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:40.82%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Jack W. Schuler</font></p>
  </td>
  <td width="12%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:12.66%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="46%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:46.52%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">Director</font></i></p>
  </td>
  <td width="40%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:40.82%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">Director</font></i></p>
  </td>
  <td width="12%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:12.66%;">
  <p style="margin:0pt 0pt .0001pt;"><i><font size="2" face="Times New Roman" style="font-size:1.0pt;font-style:italic;">&nbsp;</font></i></p>
  </td>
 </tr>
</table>

<p style="line-height:1.0pt;margin:0pt 0pt 12.0pt;"><font size="1" face="Times New Roman">&nbsp;</font></p>


 <p style="margin:24.0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">6</font></p> <br><hr size="3" width="100%" noshade color="#010101" align="center">

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<h2 style="font-weight:normal;margin:0pt 0pt 12.0pt;page-break-after:avoid;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">EXHIBIT
INDEX </font></b></h2>

<table border="1" cellspacing="0" cellpadding="0" width="100%" style="border:none;border-collapse:collapse;font-family:Times New Roman;width:100.0%;">
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:8.46%;">
  <p align="left" style="font-size:8.0pt;font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;text-align:left;"><!-- SET mrlNoTableShading -->Exhibit No.</p>
  </td>
  <td width="2%" valign="bottom" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></b></p>
  </td>
  <td width="89%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:89.16%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;">Description</font></b></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.46%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:89.16%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.46%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4.1</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:89.16%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Certificate of Incorporation of Quidel Corporation,
  as amended (filed as Exhibit&nbsp;3.1 to Quidel&#146;s current Report on Form 8-K
  dated February&nbsp;26, 1991 and incorporated herein by reference).</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.46%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:89.16%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.46%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4.2</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:89.16%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Certificate of Designations of the Series&nbsp;B
  Preferred Stock of Quidel Corporation (filed as Exhibit&nbsp;4.1 to the Quidel&#146;s
  Current Report on Form 8-K dated January&nbsp;5, 1995, and incorporated
  herein by reference).</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.46%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:89.16%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.46%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4.3</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:89.16%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Certificate of Designation of Rights, Preferences,
  Privileges and Restrictions of series&nbsp;C Junior Participating Preferred
  Stock of Quidel Corporation (filed as Exhibit&nbsp;A of Exhibit&nbsp;1 to
  Quidel&#146;s Registration Statement on Form&nbsp;8-A dated January&nbsp;8,
  1997, and incorporated herein by reference).</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.46%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:89.16%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.46%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4.4</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:89.16%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Bylaws, as amended, of Quidel Corporation (filed as
  Exhibit&nbsp;3.2 to Quidel&#146;s Current Report on Form 8-K dated August 9,
  2000, and incorporated herein by reference).</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.46%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:89.16%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.46%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4.5</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:89.16%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Amended and Restated Rights Agreement dated as of
  December&nbsp;29, 2006 between Quidel Corporation and American Stock Transfer
  and Trust Company, as Rights Agent (filed as Exhibit&nbsp;4.1 to Quidel&#146;s
  Current Report on Form&nbsp;8-K dated December 29, 2006, and incorporated
  herein by reference).</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.46%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:89.16%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.46%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">5</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:89.16%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Opinion of Gibson, Dunn &amp; Crutcher LLP.</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.46%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:89.16%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.46%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">23.1</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:89.16%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Consent of Ernst &amp; Young LLP, Independent Registered
  Public Accounting Firm.</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.46%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:89.16%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.46%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">23.2</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:89.16%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Consent of Gibson, Dunn &amp; Crutcher LLP
  (contained in Exhibit&nbsp;5 hereto).</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.46%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:89.16%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.46%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">24</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:89.16%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Power of Attorney (contained on signature page
  hereto).</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.46%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:89.16%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:8.46%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">99.1</font></p>
  </td>
  <td width="2%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:89.16%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Amended and Restated Quidel Corporation Equity
  Incentive Plan (filed as Exhibit 10.1 to Quidel&#146;s Current Report on Form 8-K
  dated May 7, 2007, and incorporated herein by reference).</font></p>
  </td>
 </tr>
</table>

<p style="line-height:1.0pt;margin:0pt 0pt 12.0pt;"><font size="1" face="Times New Roman">&nbsp;</font></p>


 <p style="margin:24.0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">7</font></p>
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{"company-data": {"conformed-name": "QUIDEL CORP /DE/", "cik": "0000353569", "assigned-sic": "2835", "irs-number": "942573850", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-144383", "film-number": "07967451"}, "business-address": {"street1": "10165 MCKELLAR CT", "city": "SAN DIEGO", "state": "CA", "zip": "92121", "phone": "8585521100"}, "former-company": {"former-conformed-name": "MONOCLONAL ANTIBODIES INC /DE/", "date-changed": "19910210"}}
As filed with Securities and Exchange Commission on July 6, 2007                                            Registration No. 333-
UNITED
STATES
SECURITIES AND EXCHANGE COMMISSION
Washington,
D.C.  20549
FORM
S-8
REGISTRATION
STATEMENT
UNDER
THE
SECURITIES ACT OF 1933
QUIDEL
CORPORATION
(Exact name of
Registrant as specified in its charter)
Delaware
94-2573850
(State or other
  jurisdiction of
incorporation or organization)
(I.R.S. Employer
Identification No.)
10165
McKellar Court
San
Diego, California 92121
(858)
552-1100
(Address, including zip
code, and telephone number,
including area
code, of Registrant's Principal Executive Offices)
QUIDEL
CORPORATION 2001 EQUITY INCENTIVE PLAN
(Full Title of Plan)
Caren L.
Mason
President
and Chief Executive Officer
QUIDEL
CORPORATION
10165
McKellar Court
San
Diego, California 92121
(858)
552-1100
(Name, address,
including zip code, and telephone number, including area code, of agent for
service)
Copies to:
Mark W.
Shurtleff
GIBSON,
DUNN & CRUTCHER LLP
4 Park
Plaza, Suite 1700
Irvine,
California 92614-8557
(949)
451-3800
CALCULATION
OF REGISTRATION FEE
Title of Each Class of Securities
to be Registered
Amount to be
Registered(1)(2)
Proposed Maximum
Offering Price
Per Share(3)
Proposed Maximum
Aggregate Offering
Price(3)
Amount of
Registration Fee
Common Stock, par value
  $0.001 per share
2,000,000
$
17.685
$
35,370,000
$
1,085.86
(1)
Represents
an additional 2,000,000 shares of Quidel's common stock issuable under the
Quidel Corporation 2001 Equity Incentive Plan.
(2)
Also
includes associated preferred stock purchase rights to purchase shares of
Quidel's common stock, which rights are not currently separable from the shares
of common stock and are not currently exercisable. Pursuant to
Rule 416(a), this Registration Statement also covers shares issued
pursuant to antidilution provisions set forth in the Quidel Corporation 2001
Equity Incentive Plan.
(3)
Estimated
solely for the purpose of calculating the registration fee pursuant to
Rules 457(c) and 457(h) and based on the average of the high and the low
price of Quidel's common stock as reported on July 2, 2007 on the Nasdaq Global
Market.
INTRODUCTION
This Registration Statement on Form S-8 is
filed by Quidel Corporation, a Delaware corporation ("Quidel"), to register
2,000,000 additional shares of Quidel common stock issuable under the Quidel
Corporation 2001 Equity Incentive Plan.
PART I
INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS
Item 1.
Plan Information.*
Item 2.
Registrant Information
and Employee Plan Annual Information.*
*
Information
required by Part I of Form S-8 to be contained in the
Section 10(a) prospectus is omitted from this registration statement in
accordance with Rule 428 under the Securities Act of 1933, as amended (the
"Securities Act"), and the Note to Part I of Form S-8.
PART II
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
Item
3.
Incorporation
of Documents by Reference.
The following documents, which previously have been
filed by Quidel with the Securities and Exchange Commission (the "Commission"),
are incorporated herein by reference and made a part hereof:
a)
Quidel's Annual
Report on Form 10-K for the fiscal year ended December 31, 2006;
b)
Quidel's Quarterly
Report on Form 10-Q for the quarter ended March 31, 2007;
c)
All other reports
filed by Quidel pursuant to Section 13(a) or 15(d) of the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), since the end of the
fiscal year ended December 31, 2006;
d)
The description of
Quidel's common stock contained in the Registration Statement on Form 8-A
dated February 28, 1983, including any amendment or report filed for the
purpose of updating such description; and
e)
The description of
Quidel's preferred stock purchase rights contained in the Registration
Statement on Form 8-A filed on January 14, 1997, including any
amendment or report filed for the purpose of updating such description.
All documents
filed by Quidel pursuant to Sections 13(a), 13(c), 14 and 15(d) of the
Securities Exchange Act, subsequent to the date of this Registration Statement
and prior to the filing of a post-effective amendment hereto that
indicates that all securities offered hereunder have been sold or that
deregisters all securities then remaining unsold shall be deemed to be
incorporated by reference herein and to be a part hereof from the date of
filing of such documents.  Nothing in
this Registration Statement shall be deemed to incorporate information
furnished but not filed with the Commission.
For purposes of
this Registration Statement, any statement contained in a document incorporated
or deemed to be incorporated herein by reference shall be deemed to be modified
or superseded to the extent that a statement contained herein or in any other
subsequently filed document that also is or is deemed to be incorporated herein
by reference modifies or supersedes such statement in such document.  Any statement so modified or superseded shall
not be deemed, except as so modified or superseded, to constitute a part of
this Registration Statement.
Item
4.
Description
of Securities.
Not applicable.
2
Item
5.
Interests
of Named Experts and Counsel.
Not applicable.
Item
6.
Indemnification
of Directors and Officers.
Quidel is a Delaware corporation.  Section 145(a) of the General Corporation Law
of the State of Delaware (the "DGCL") provides that a Delaware corporation may
indemnify any person who was or is a party or is threatened to be made a party
to any threatened, pending or completed action, suit or proceeding, whether
civil, criminal, administrative or investigative, other than an action by or in
the right of the corporation, by reason of the fact that such person is or was a
director, officer, employee or agent of the corporation or is or was serving at
the request of the corporation as a director, officer, employee or agent of
another corporation, partnership, joint venture, trust or enterprise, against
expenses (including attorneys' fees), judgments, fines and amounts paid in
settlement actually and reasonably incurred by such person in connection with
such action, suit or proceeding if he or she acted in good faith and in a
manner he or she reasonably believed to be in or not opposed to the best
interests of the corporation, and, with respect to any criminal action or
proceeding, had no reasonable cause to believe his or her conduct was unlawful.
Section 145(b) of the DGCL provides that a
Delaware corporation may indemnify any person who was or is a party or is
threatened to be made a party to any threatened, pending or completed action or
suit by or in the right of a corporation to procure a judgment in its favor by
reason of the fact that such person acted in any of the capacities set forth
above, against expenses (including attorneys' fees) actually and reasonably
incurred by such person in connection with the defense or settlement of such
action or suit if he or she acted under similar standards to those set forth
above, except that no indemnification may be made in respect to any claim,
issue or matter as to which such person shall have been adjudged to be liable
to the corporation unless and only to the extent that the Chancery Court or
court in which such action or suit was brought shall determine that despite the
adjudication of liability, but in view of all the circumstances of the case,
such person is fairly and reasonably entitled to be indemnified for such
expenses which the Court of Chancery or such other court shall deem proper.
Further subsections of DGCL Section 145 provide that:
(1)  to the extent a present or former director or
officer of a corporation has been successful on the merits or otherwise in the
defense of any action, suit or proceeding referred to in subsections (a) and
(b) of Section 145 or in the defense of any claim, issue or matter therein,
such person shall be indemnified against expenses (including attorneys' fees)
actually and reasonably incurred by such person in connection therewith;
(2)  any indemnification under subsections (a) and
(b) of Section 145 (unless ordered by a court) shall be made by the corporation
only as authorized in the specific case upon a determination that
indemnification of the present or former director, officer, employee or agent
is proper in the circumstances because the person has met the applicable
standard of conduct set forth in subsections (a) and (b) of Section 145.
Such determination shall be made, with respect to a person who is a director or
officer at the time of such determination, (1) by a majority vote of the
directors who are not parties to such action, suit or proceeding, even though
less than a quorum, or (2) by a committee of such directors designated by
majority vote of such directors, even though less than a quorum, or (3) if
there are no such directors, or if such directors so direct, by independent
legal counsel in a written opinion, or (4) by the stockholders;
(3)  expenses (including attorneys' fees) incurred
by an officer or director in defending any civil, criminal, administrative or
investigative action, suit or proceeding may be paid by the corporation in
advance of the final disposition of such action, suit or proceeding upon
receipt of an undertaking by or on behalf of such director or officer to repay
such amount if it shall ultimately be determined that such person is not
entitled to be indemnified by the corporation as authorized in Section 145.
Such expenses (including attorneys' fees) incurred by former directors and
officers or other employees and agents may be so paid upon such terms and
conditions, if any, as the corporation deems appropriate;
(4)  the indemnification and advancement of
expenses provided by, or granted pursuant to, Section 145 shall not be deemed
exclusive of any other rights to which those seeking indemnification or
advancement of expenses may be entitled under any bylaw, agreement, vote of
stockholder or disinterested directors or otherwise, both as to action in such
person's official capacity and as to action in another capacity while holding
such office; and
(5)  the corporation shall have the power to
purchase and maintain insurance on behalf of any person who is or was a
director, officer, employee or agent of the corporation, or is or was serving
at the request of the corporation as a director, officer, employee or agent of
another corporation, partnership, joint venture, trust or other enterprise,
against any liability asserted against such person and
3
incurred by such person
in any such capacity, or arising out of such person's status as such, whether
or not the corporation would have the power to indemnify such person against
such liability under Section 145.
Article 10 of the Company's Certificate of
Incorporation relieves its directors from monetary damages to the Company or
its stockholders for breach of such director's fiduciary duty as a director to
the fullest extent permitted by the DGCL. Under Section 102(b)(7) of the DGCL,
a corporation may relieve its directors from personal liability to such
corporation or its stockholders for monetary damages for any breach of their
fiduciary duty as directors except (i) for a breach of the duty of loyalty,
(ii) for failure to act in good faith, (iii) for intentional misconduct or
knowing violation of law, (iv) for willful or negligent violations of certain
provisions in the DGCL imposing certain requirements with respect to stock
repurchases, redemptions and dividends, or (v) for any transactions from which
the director derived an improper personal benefit.  Depending upon the character of the
proceeding, under Delaware law, the Company may indemnify against expenses
(including attorneys' fees), judgments, fines and amounts paid in settlement
actually and reasonably incurred in connection with any action, suit or
proceeding if the person indemnified acted in good faith and in a manner he or
she reasonably believed to be in or not opposed to the best interest of the
Company.
The Company's Bylaws provide that the Company shall
indemnify any person who was or is a party, or is threatened to be made a party
to any threatened, pending or completed action, suit or proceeding, whether or
not by or in the right of the Company, by reason of the fact that he is or was
a director of officer of the Company, or is or was serving at the request of
the Company as a director, officer, employee or agent of another corporation,
partnership, joint venture, trust or other enterprise.
To implement the provisions of the DGCL and our
Bylaws, we have entered into Indemnification Agreements with each of our
directors and officers.  The provisions
of the Indemnification Agreements parallel the portions of the Bylaws described
above.  Absent the Indemnification
Agreements, the indemnification that might be available to directors and
officers could be changed by amendment to our Certificate of Incorporation and
Bylaws.  In the event of changes, after
the date of such Indemnification Agreements, in any applicable law, statute or
rule which expands the right of a Delaware corporation to indemnify a member of
its board of directors or an officer, such changes shall be,
ipso facto
, within the purview of the
rights and obligations under the Indemnification Agreements.  We may seek directors and officers liability
insurance against the cost of defense, settlement or payment of a judgment
under certain circumstances.
Item
7.
Exemption
from Registration Claimed.
Not applicable.
Item
8.
Exhibits.
Exhibit No.
Description
4.1
Certificate of Incorporation of Quidel Corporation,
  as amended (filed as Exhibit 3.1 to Quidel's current Report on Form 8-K
  dated February 26, 1991 and incorporated herein by reference).
4.2
Certificate of Designations of the Series B
  Preferred Stock of Quidel Corporation (filed as Exhibit 4.1 to the
  Quidel's Current Report on Form 8-K dated January 5, 1995, and
  incorporated herein by reference).
4.3
Certificate of Designation of Rights, Preferences,
  Privileges and Restrictions of series C Junior Participating Preferred
  Stock of Quidel Corporation (filed as Exhibit A of Exhibit 1 to
  Quidel's Registration Statement on Form 8-A dated January 8,
  1997, and incorporated herein by reference).
4.4
Bylaws, as amended, of Quidel Corporation (filed as
  Exhibit 3.2 to Quidel's Current Report on Form 8-K dated August 9,
  2000, and incorporated herein by reference).
4.5
Amended and Restated Rights Agreement dated as of
  December 29, 2006 between Quidel Corporation and American Stock Transfer
  and Trust Company, as Rights Agent (filed as Exhibit 4.1 to Quidel's
  Current Report on Form 8-K dated December 29, 2006, and incorporated
  herein by reference).
5
Opinion of Gibson, Dunn & Crutcher LLP.
23.1
Consent of Ernst & Young LLP, Independent Registered
  Public Accounting Firm.
23.2
Consent of Gibson, Dunn & Crutcher LLP
  (contained in Exhibit 5 hereto).
4
24
Power of Attorney (contained on signature page
  hereto).
99.1
Amended and Restated Quidel Corporation Equity
  Incentive Plan (filed as Exhibit 10.1 to Quidel's Current Report on Form 8-K
  dated May 7, 2007, and incorporated herein by reference).
Item
9.
Undertakings.
(a)
The
undersigned registrant hereby undertakes:
(1)
To
file, during any period in which offers or sales are being made, a
post-effective amendment to this Registration Statement:
(i)
To
include any prospectus required by Section 10(a)(3) of the Securities Act;
(ii)
To reflect
in the prospectus any facts or events arising after the effective date of the
Registration Statement (or the most recent post-effective amendment thereof)
which, individually or in the aggregate, represent a fundamental change in the
information set forth in the Registration Statement;
(iii)
To
include any material information with respect to the plan of distribution not
previously disclosed in the Registration Statement or any material change to
such information in the Registration Statement;
provided, however,
that paragraphs (a)(1)(i) and (a)(1)(ii) do not apply if the information
required to be included in a post-effective amendment by those paragraphs is
contained in periodic reports filed with or furnished to the Commission by the
registrant pursuant to Section 13 or Section 15(d) of the Exchange
Act that are incorporated by reference in the Registration Statement.
(2)
That,
for the purpose of determining any liability under the Securities Act, each
such post-effective amendment shall be deemed to be a new registration
statement relating to the securities offered therein, and the offering of such
securities at that time shall be deemed to be the initial
bona fide
offering thereof.
(3)
To
remove from registration by means of a post-effective amendment any of the
securities being registered which remain unsold at the termination of the
offering.
(b)
The
undersigned registrant hereby undertakes that, for purposes of determining any
liability under the Securities Act, each filing of the registrant's annual
report pursuant to Section 13(a) or 15(d) of the Exchange Act (and, where
applicable, each filing of an employee benefit plan's annual report pursuant to
Section 15(d) of the Exchange Act) that is incorporated by reference in
the Registration Statement shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of such securities
at that time shall be deemed to be the initial
bona fide
offering thereof.
(c)
Insofar
as indemnification for liabilities arising under the Securities Act may be
permitted to directors, officers and controlling persons of the registrant
pursuant to the foregoing provisions, or otherwise, the registrant has been
advised that in the opinion of the Commission such indemnification is against
public policy as expressed in the Securities Act and is, therefore,
unenforceable.  In the event that a claim
for indemnification against such liabilities (other than the payment by the
registrant of expenses incurred or paid by a director, officer or controlling
person of the registrant in the successful defense of any action, suit or proceeding)
is asserted by such director, officer or controlling person in connection with
the securities being registered, the registrant will, unless in the opinion of
its counsel the matter has been settled by controlling precedent, submit to a
court of appropriate jurisdiction the question of whether such indemnification
by it is against public policy as expressed in the Securities Act and will be
governed by a final adjudication of such issue.
5
SIGNATURES
Pursuant to the requirements of the Securities Act of 1933, the
registrant certifies that it has reasonable grounds to believe that it meets
all of the requirements for filing on Form S-8 and has duly caused
this Registration Statement to be signed on its behalf by the undersigned,
thereunto duly authorized, in the City of San Diego, State of California, on
July 6, 2007.
QUIDEL CORPORATION
By:
/s/ Caren L. Mason
Name:
Caren L. Mason
Title:
President, Chief Executive Officer and Director
POWER OF
ATTORNEY
KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature
appears below does hereby constitute and appoint Caren L. Mason and John M.
Radak, and each of them with full power of substitution and with full power to
act without the other, his or her true and lawful attorney-in-fact and agent to
act for him or her in his or her name, place and stead, in any and all
capacities, to sign any and all amendments (including post-effective
amendments) to this Registration Statement, and to file this Registration Statement,
with all exhibits thereto, and other documents in connection therewith, with
the Securities and Exchange Commission, granting unto said attorneys-in-fact
and agents, and each of them, full power and authority to do and perform each
and every act and thing requisite and necessary to be done in order to
effectuate the same as fully, to all intents and purposes, as they, he or she
might or could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents may lawfully do or cause to be done by virtue
hereof.
Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed below by the following persons in the
capacities indicated below and on the date indicated.
July 6, 2007
/s/ Caren L. Mason
/s/ Douglas S.
  Harrington
Caren L. Mason
Douglas S.
  Harrington, M.D.
Chief Executive Officer
Director
(Principal Executive Officer);
Director
/s/ John M. Radak
/s/ Rod F.
  Dammeyer
John M. Radak
Rod F. Dammeyer
Chief Financial Officer
Director
(Principal Financial Officer and Accounting
  Officer)
/s/ Mark A. Pulido
/s/ Mary Lake
  Polan
Mark A. Pulido
Mary Lake Polan,
  M.D., Ph.D., M.P.H.
Chairman of the Board
Director
Director
/s/ Thomas D. Brown
/s/ Jack W.
  Schuler
Thomas D. Brown
Jack W. Schuler
Director
Director
6
EXHIBIT
INDEX
Exhibit No.
Description
4.1
Certificate of Incorporation of Quidel Corporation,
  as amended (filed as Exhibit 3.1 to Quidel's current Report on Form 8-K
  dated February 26, 1991 and incorporated herein by reference).
4.2
Certificate of Designations of the Series B
  Preferred Stock of Quidel Corporation (filed as Exhibit 4.1 to the Quidel's
  Current Report on Form 8-K dated January 5, 1995, and incorporated
  herein by reference).
4.3
Certificate of Designation of Rights, Preferences,
  Privileges and Restrictions of series C Junior Participating Preferred
  Stock of Quidel Corporation (filed as Exhibit A of Exhibit 1 to
  Quidel's Registration Statement on Form 8-A dated January 8,
  1997, and incorporated herein by reference).
4.4
Bylaws, as amended, of Quidel Corporation (filed as
  Exhibit 3.2 to Quidel's Current Report on Form 8-K dated August 9,
  2000, and incorporated herein by reference).
4.5
Amended and Restated Rights Agreement dated as of
  December 29, 2006 between Quidel Corporation and American Stock Transfer
  and Trust Company, as Rights Agent (filed as Exhibit 4.1 to Quidel's
  Current Report on Form 8-K dated December 29, 2006, and incorporated
  herein by reference).
5
Opinion of Gibson, Dunn & Crutcher LLP.
23.1
Consent of Ernst & Young LLP, Independent Registered
  Public Accounting Firm.
23.2
Consent of Gibson, Dunn & Crutcher LLP
  (contained in Exhibit 5 hereto).
24
Power of Attorney (contained on signature page
  hereto).
99.1
Amended and Restated Quidel Corporation Equity
  Incentive Plan (filed as Exhibit 10.1 to Quidel's Current Report on Form 8-K
  dated May 7, 2007, and incorporated herein by reference).
7