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<TITLE>LabOne, Inc. Form 8-K dated March 28, 2003</TITLE>
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<FONT SIZE=5><STRONG><P ALIGN="CENTER">UNITED STATES SECURITIES AND EXCHANGE COMMISSION</P>
</FONT></STRONG><FONT SIZE=4><P ALIGN="CENTER">Washington, D.C. 20549</P>
</FONT><FONT SIZE=5><STRONG><P ALIGN="CENTER">FORM 8-K</P>
</FONT></STRONG><P ALIGN="CENTER">CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934</P>
<P ALIGN="CENTER">Date of Report: <U>March 28, 2003</P>
</U><P ALIGN="CENTER">Commission file number: 0-16946</P>
<B><U><FONT FACE="Times,Times New Roman" SIZE=5><P ALIGN="CENTER">LabOne, Inc.</P>
</B></U></FONT><P ALIGN="CENTER">10101 Renner Blvd.</P>
<P ALIGN="CENTER">Lenexa, Kansas 66219</P>
<P ALIGN="CENTER">(913) 888-1770</P>
<FONT FACE="Times,Times New Roman"><P ALIGN="CENTER">Incorporated in Missouri</P>
<P ALIGN="CENTER">I.R.S. Employer Identification Number: 43-1039532</P>
</FONT><FONT FACE="Times,Times New Roman" SIZE=2><P>&nbsp;</P>
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<FONT FACE="Times,Times New Roman"><P><B>Item 9.&nbsp;&nbsp;Regulation FD Disclosure</B></P>
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<P>Attached as Exhibit 99.1 and Exhibit 99.2 are the certifications required pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.</P>

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<B><U><P>Exhibit Index</P>
</B></U><P>Exhibit 99.1&#9;Sarbanes-Oxley Act Certification by Chief Executive Officer</P>
<P>Exhibit 99.2&#9;Sarbanes-Oxley Act Certification by Chief Financial Officer</P>

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<I><FONT SIZE=5><P ALIGN="CENTER">Signatures</I></FONT><FONT FACE="Times,Times New Roman"> </P>
<P ALIGN="CENTER">Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.</P>

<P ALIGN="CENTER">&nbsp;</FONT><FONT SIZE=5>LabOne, Inc.</P>
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      <P>Date:&nbsp;&nbsp;March 28, 2003</P></TD>
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      <P>By <U>/s/ <I>John W. McCarty</I></U><BR>John W. McCarty
      <BR>Executive V.P. and Chief Financial Officer
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LabOne, Inc. Form 8-K dated March 28, 2003
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:
March 28, 2003
Commission file number: 0-16946
LabOne, Inc.
10101 Renner Blvd.
Lenexa, Kansas 66219
(913) 888-1770
Incorporated in Missouri
I.R.S. Employer Identification Number: 43-1039532
Item 9.  Regulation FD Disclosure
Attached as Exhibit 99.1 and Exhibit 99.2 are the certifications required pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
Exhibit Index
Exhibit 99.1	Sarbanes-Oxley Act Certification by Chief Executive Officer
Exhibit 99.2	Sarbanes-Oxley Act Certification by Chief Financial Officer
Signatures
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.
LabOne, Inc.
Date:  March 28, 2003
By
/s/
John W. McCarty
John W. McCarty
Executive V.P. and Chief Financial Officer