<HTML><HEAD><TITLE>LabOne, Inc. Form 8-K dated December 31, 2002</TITLE>
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<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<BR>PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
EXCHANGE ACT OF 1934</P>
<P align=center>Date of Report: <U>December 31, 2002</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.<BR>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></FONT>
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<P>Item 9.&nbsp;&nbsp;Regulation FD Disclosure</P></FONT><B>
<P align=center>LabOne Announces Prepayment of Series A Notes</P></B>
<P>LabOne, Inc. announced the prepayment of $15 million of Series A Senior Subordinated Notes, 11% coupon at 103% of principal on December 31, 2002.  The notes were originally issued in August 2001 as part of its financing of the acquisition of Osborn Laboratories, Inc.  Funding for the prepayment was obtained from LabOne's existing line of credit. In connection with the transaction, LabOne will record a $275,000 after-tax charge in the fourth quarter of 2002.</P>
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<P>&nbsp;&nbsp;</P><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></FONT>
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      <P>Date:&nbsp;&nbsp;January 3, 2003</P></TD>
    <TD vAlign=center width="60%">
      <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 December 31, 2002
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:
December 31, 2002
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
LabOne Announces Prepayment of Series A Notes
LabOne, Inc. announced the prepayment of $15 million of Series A Senior Subordinated Notes, 11% coupon at 103% of principal on December 31, 2002.  The notes were originally issued in August 2001 as part of its financing of the acquisition of Osborn Laboratories, Inc.  Funding for the prepayment was obtained from LabOne's existing line of credit. In connection with the transaction, LabOne will record a $275,000 after-tax charge in the fourth quarter of 2002.
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:  January 3, 2003
By
/s/
John W. McCarty
John W. McCarty
Executive
      V.P. and Chief Financial Officer