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  <div style="border:none;border-top:double windowtext 6.0pt;padding:0in 0in 0in 0in;">
  
  <p style="border:none;color:windowtext;margin:0in 0in .0001pt;padding:0in;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  </div>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">UNITED
  STATES</font></b></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">SECURITIES
  AND EXCHANGE COMMISSION</font></b></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">WASHINGTON,
  D.C. 20549</font></b></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">FORM&nbsp;8-K</font></b></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">CURRENT
  REPORT</font></b></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">PURSUANT
  TO SECTION&nbsp;13 OR 15(d)&nbsp;OF THE</font></b></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">SECURITIES
  EXCHANGE ACT OF 1934</font></b></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Date of Report
  (Date of earliest event reported): <b>April&nbsp;23, 2008</b></font></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><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="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Exact name of
  Registrant as specified in its Charter)</font></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <div align="center">
  
  <table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
   <tr>
    <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Delaware</font></b></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
    </td>
    <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">0-10961</font></b></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
    </td>
    <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><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="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(State or Other
    Jurisdiction <br>
    of Incorporation)</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Commission<br>
    File Number)</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(IRS Employer<br>
    Identification No.)</font></p>
    </td>
   </tr>
   <tr>
    <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
   </tr>
   <tr>
    <td width="66%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:66.0%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">10165
    McKellar Court</font></b></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
   </tr>
   <tr>
    <td width="66%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:66.0%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">San
    Diego, California</font></b></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">92121</font></b></p>
    </td>
   </tr>
   <tr>
    <td width="66%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:66.0%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Address of
    Principal Executive Offices)</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Zip Code)</font></p>
    </td>
   </tr>
  </table>
  
  </div>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Registrant&#146;s
  telephone number, including area code:&#160;&#160;&#160; <b>(858) 552-1100</b></font></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Not
  Applicable</font></b></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Former Name or
  Former Address, if Changed Since Last Report)</font></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check the appropriate box
  below if the Form&nbsp;8-K filing is intended to simultaneously satisfy the
  filing obligation of the Registrant under any of the following provisions (see
  General Instruction A.2. below):</font></p>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="color:windowtext;font-size:10.0pt;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font> Written communications pursuant to Rule&nbsp;425
  under the Securities Act (17 CFR 230.425)</p>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="color:windowtext;font-size:10.0pt;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font> Soliciting material pursuant to Rule&nbsp;14a-12
  under the Exchange Act (17 CFR 240.14a-12)</p>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="color:windowtext;font-size:10.0pt;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font> Pre-commencement communications pursuant to Rule&nbsp;14d-2(b)&nbsp;under
  the Exchange Act (17&nbsp;CFR&nbsp;240.14d-2(b))</p>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="color:windowtext;font-size:10.0pt;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font>
  Pre-commencement communications pursuant to Rule&nbsp;13e-4(c)&nbsp;under the Exchange
  Act (17&nbsp;CFR&nbsp;240.13e-4(c))</p>
  
  <div style="border:none;border-bottom:double windowtext 6.0pt;padding:0in 0in 0in 0in;">
  
  <p style="border:none;color:windowtext;margin:0in 0in .0001pt;padding:0in;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  </div>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <div style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>
  
  </div>
  <!-- SEQ.=1,FOLIO='',FILE='C:\JMS\105579\08-12276-1\task2884338\12276-1-ba.htm',USER='105579',CD='Apr 23 12:24 2008' -->
  
  
  <br clear="all" style="page-break-before:always;">
  
  
  <div>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
   <tr>
    <td width="10%" valign="top" style="padding:0in 0in 0in 0in;width:10.0%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 2.02</font></b></p>
    </td>
    <td width="3%" valign="bottom" style="padding:0in 0in 0in 0in;width:3.34%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
    </td>
    <td width="86%" valign="top" style="padding:0in 0in 0in 0in;width:86.66%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Results of Operations and
    Financial Condition.</font></b></p>
    </td>
   </tr>
  </table>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;text-indent:35.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">On April&nbsp;23, 2008, Quidel Corporation issued a press release
  announcing the financial results for its first quarter ended March&nbsp;31,
  2008 and will hold an earnings conference call at 2:00&nbsp;p.m., Pacific Time,
  on April&nbsp;23, 2008 to discuss such results.&#160;
  A copy of the press release is attached as Exhibit&nbsp;99.1 to this
  current report on Form&nbsp;8-K.</font></p>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;text-indent:35.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;text-indent:35.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The information in this current report on Form&nbsp;8-K, including the
  exhibit attached hereto, is being furnished and shall not be deemed &#147;filed&#148; for
  purposes of Section&nbsp;18 of the Securities Exchange Act of 1934, as amended,
  or otherwise subject to the liabilities of such section.&#160; The information in this current report on Form&nbsp;8-K
  shall not be incorporated by reference into any registration statement or other
  document pursuant to the Securities Act of 1933, as amended, except as
  expressly set forth by specific reference in such filing.</font></p>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;text-indent:35.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
   <tr>
    <td width="10%" valign="top" style="padding:0in 0in 0in 0in;width:10.0%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 9.01</font></b></p>
    </td>
    <td width="3%" valign="bottom" style="padding:0in 0in 0in 0in;width:3.34%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
    </td>
    <td width="86%" valign="top" style="padding:0in 0in 0in 0in;width:86.66%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Financial Statements and Exhibits.</font></b></p>
    </td>
   </tr>
  </table>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;text-indent:35.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
   <tr>
    <td width="10%" valign="top" style="padding:0in 0in 0in 0in;width:10.0%;">
    <p align="right" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:right;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">(d)</font></b></p>
    </td>
    <td width="3%" valign="bottom" style="padding:0in 0in 0in 0in;width:3.34%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
    </td>
    <td width="86%" valign="top" style="padding:0in 0in 0in 0in;width:86.66%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Exhibits.</font></b></p>
    </td>
   </tr>
  </table>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;page-break-after:avoid;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="color:windowtext;margin:0in 0in .0001pt 1.0in;page-break-after:avoid;punctuation-wrap:simple;text-autospace:none;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The following
  exhibit is furnished with this current report on Form&nbsp;8-K:</font></p>
  
  <p style="color:windowtext;margin:0in 0in .0001pt 1.0in;page-break-after:avoid;punctuation-wrap:simple;text-autospace:none;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
   <tr>
    <td width="12%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:12.9%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Exhibit&nbsp;Number</font></b></p>
    </td>
    <td width="3%" valign="bottom" style="padding:0in 0in 0in 0in;width:3.76%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="83%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:83.34%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Description&nbsp;of&nbsp;Exhibit</font></b></p>
    </td>
   </tr>
   <tr>
    <td width="12%" valign="top" style="border:none;padding:0in 0in 0in 0in;width:12.9%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;page-break-after:avoid;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="3%" valign="bottom" style="padding:0in 0in 0in 0in;width:3.76%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="83%" valign="top" style="border:none;padding:0in 0in 0in 0in;width:83.34%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;page-break-after:avoid;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
   </tr>
   <tr>
    <td width="12%" valign="top" style="padding:0in 0in 0in 0in;width:12.9%;">
    <h2 style="color:windowtext;font-weight:bold;margin:0in .5in .0001pt 0in;page-break-after:avoid;punctuation-wrap:simple;text-autospace:none;text-indent:0in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:normal;">99.1</font></b></h2>
    </td>
    <td width="3%" valign="bottom" style="padding:0in 0in 0in 0in;width:3.76%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="83%" valign="top" style="padding:0in 0in 0in 0in;width:83.34%;">
    <h2 style="color:windowtext;font-weight:bold;margin:0in .5in .0001pt 0in;page-break-after:avoid;punctuation-wrap:simple;text-autospace:none;text-indent:0in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:normal;">Press
    release, dated April&nbsp;23, 2008, reporting Quidel Corporation&#146;s financial
    results for its first quarter ended March&nbsp;31,&nbsp;2008.</font></b></h2>
    </td>
   </tr>
  </table>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2</font></p>
  
  <div style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>
  
  </div>
  <!-- SEQ.=1,FOLIO='2',FILE='C:\JMS\105579\08-12276-1\task2884338\12276-1-ba.htm',USER='105579',CD='Apr 23 12:24 2008' -->
  
  
  <br clear="all" style="page-break-before:always;">
  
  
  <div>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">SIGNATURES</font></b></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pursuant to the
  requirements of the Securities Exchange Act of 1934, as amended, the registrant
  has duly caused this report to be signed on its behalf by the undersigned
  hereunto duly authorized.</font></p>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
   <tr>
    <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.66%;">
    <p style="color:windowtext;margin:0in 0in .0001pt 20.0pt;punctuation-wrap:simple;text-autospace:none;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Date:
    April&nbsp;23, 2008</font></p>
    </td>
    <td width="49%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:49.34%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
   </tr>
   <tr>
    <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.66%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="49%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:49.34%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">QUIDEL CORPORATION</font></b></p>
    </td>
   </tr>
   <tr>
    <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.66%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="49%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:49.34%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
   </tr>
   <tr>
    <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.66%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="49%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:49.34%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
   </tr>
   <tr>
    <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.66%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="6%" valign="top" style="padding:0in 0in 0in 0in;width:6.0%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
    </td>
    <td width="43%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:43.34%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ John M. Radak</font></p>
    </td>
   </tr>
   <tr>
    <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.66%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="6%" valign="top" style="padding:0in 0in 0in 0in;width:6.0%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>
    </td>
    <td width="43%" valign="top" style="border:none;padding:0in 0in 0in 0in;width:43.34%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">John M. Radak</font></p>
    </td>
   </tr>
   <tr>
    <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.66%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="6%" valign="top" style="padding:0in 0in 0in 0in;width:6.0%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Its:</font></p>
    </td>
    <td width="43%" valign="top" style="padding:0in 0in 0in 0in;width:43.34%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Chief Financial Officer</font></p>
    </td>
   </tr>
  </table>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3</font></p>
  
  <div style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>
  
  </div>
  <!-- SEQ.=1,FOLIO='3',FILE='C:\JMS\105579\08-12276-1\task2884338\12276-1-ba.htm',USER='105579',CD='Apr 23 12:24 2008' -->
  
  
  <br clear="all" style="page-break-before:always;">
  
  
  <div>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">EXHIBIT
  INDEX</font></b></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
   <tr>
    <td width="13%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:13.82%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Exhibit&nbsp;Number</font></b></p>
    </td>
    <td width="3%" valign="bottom" style="padding:0in 0in 0in 0in;width:3.1%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
    </td>
    <td width="83%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:83.08%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Description&nbsp;of&nbsp;Exhibit</font></b></p>
    </td>
   </tr>
   <tr>
    <td width="13%" valign="top" style="border:none;padding:0in 0in 0in 0in;width:13.82%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="3%" valign="bottom" style="padding:0in 0in 0in 0in;width:3.1%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="83%" valign="top" style="border:none;padding:0in 0in 0in 0in;width:83.08%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
   </tr>
   <tr>
    <td width="13%" valign="top" style="padding:0in 0in 0in 0in;width:13.82%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;page-break-after:avoid;punctuation-wrap:simple;text-autospace:none;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">99.1</font></p>
    </td>
    <td width="3%" valign="bottom" style="padding:0in 0in 0in 0in;width:3.1%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;page-break-after:avoid;punctuation-wrap:simple;text-autospace:none;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="83%" valign="top" style="padding:0in 0in 0in 0in;width:83.08%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;page-break-after:avoid;punctuation-wrap:simple;text-autospace:none;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Press release, dated April&nbsp;23, 2008, reporting
    Quidel Corporation&#146;s financial results for its first quarter ended
    March&nbsp;31, 2008.</font></p>
    </td>
   </tr>
  </table>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4</font></p>
  
  <div style="color:windowtext;margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>
  
  </div>
  <!-- SEQ.=1,FOLIO='4',FILE='C:\JMS\105579\08-12276-1\task2884338\12276-1-ba.htm',USER='105579',CD='Apr 23 12:24 2008' -->
  
  
  </body>
  
  </html>
metadata_documents: [{"type": "8-K", "sequence": "1", "filename": "a08-12276_18k.htm", "description": "8-K", "secsgml_size_bytes": 37665}]
metadata_filer: {"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": "8-K", "act": "34", "file-number": "000-10961", "film-number": "08771934"}, "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"}}
text: UNITED
  STATES
  SECURITIES
  AND EXCHANGE COMMISSION
  WASHINGTON,
  D.C. 20549
  FORM 8-K
  CURRENT
  REPORT
  PURSUANT
  TO SECTION 13 OR 15(d) OF THE
  SECURITIES
  EXCHANGE ACT OF 1934
  Date of Report
  (Date of earliest event reported):
  April 23, 2008
  QUIDEL
  CORPORATION
  (Exact name of
  Registrant as specified in its Charter)
  Delaware
  0-10961
  94-2573850
  (State or Other
    Jurisdiction
  of Incorporation)
  (Commission
  File Number)
  (IRS Employer
  Identification No.)
  10165
    McKellar Court
  San
    Diego, California
  92121
  (Address of
    Principal Executive Offices)
  (Zip Code)
  Registrant's
  telephone number, including area code:
  (858) 552-1100
  Not
  Applicable
  (Former Name or
  Former Address, if Changed Since Last Report)
  Check the appropriate box
  below if the Form 8-K filing is intended to simultaneously satisfy the
  filing obligation of the Registrant under any of the following provisions (see
  General Instruction A.2. below):
  o
  Written communications pursuant to Rule 425
  under the Securities Act (17 CFR 230.425)
  o
  Soliciting material pursuant to Rule 14a-12
  under the Exchange Act (17 CFR 240.14a-12)
  o
  Pre-commencement communications pursuant to Rule 14d-2(b) under
  the Exchange Act (17 CFR 240.14d-2(b))
  o
  Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange
  Act (17 CFR 240.13e-4(c))
  Item 2.02
  Results of Operations and
    Financial Condition.
  On April 23, 2008, Quidel Corporation issued a press release
  announcing the financial results for its first quarter ended March 31,
  2008 and will hold an earnings conference call at 2:00 p.m., Pacific Time,
  on April 23, 2008 to discuss such results. 
  A copy of the press release is attached as Exhibit 99.1 to this
  current report on Form 8-K.
  The information in this current report on Form 8-K, including the
  exhibit attached hereto, is being furnished and shall not be deemed "filed" for
  purposes of Section 18 of the Securities Exchange Act of 1934, as amended,
  or otherwise subject to the liabilities of such section.  The information in this current report on Form 8-K
  shall not be incorporated by reference into any registration statement or other
  document pursuant to the Securities Act of 1933, as amended, except as
  expressly set forth by specific reference in such filing.
  Item 9.01
  Financial Statements and Exhibits.
  (d)
  Exhibits.
  The following
  exhibit is furnished with this current report on Form 8-K:
  Exhibit Number
  Description of Exhibit
  99.1
  Press
    release, dated April 23, 2008, reporting Quidel Corporation's financial
    results for its first quarter ended March 31, 2008.
  2
  SIGNATURES
  Pursuant to the
  requirements of the Securities Exchange Act of 1934, as amended, the registrant
  has duly caused this report to be signed on its behalf by the undersigned
  hereunto duly authorized.
  Date:
    April 23, 2008
  QUIDEL CORPORATION
  By:
  /s/ John M. Radak
  Name:
  John M. Radak
  Its:
  Chief Financial Officer
  3
  EXHIBIT
  INDEX
  Exhibit Number
  Description of Exhibit
  99.1
  Press release, dated April 23, 2008, reporting
    Quidel Corporation's financial results for its first quarter ended
    March 31, 2008.
  4