As filed with the Securities and Exchange Commission on August 7, 2003. Registration no. 333-105405 ================================================================================ SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 LABONE, INC. (Exact name of Registrant as specified in its charter) Missouri 43-1039532 (State or other jurisdiction of (I.R.S. Employer incorporation or organization) Identification Number) 10101 Renner Blvd. Lenexa, Kansas 66219 (913) 888-1770 (Address, including zip code and telephone number, including area code, of registrant's principal executive offices) Joseph C. Benage Executive Vice President, General Counsel and Secretary LabOne, Inc. 10101 Renner Blvd. Lenexa, Kansas 66219 (913) 888-1770 (Name, address, including zip code and telephone number, including area code, of agent for service) APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: From time to time after the effective date of this Registration Statement. If the only securities being registered on this form are being offered pursuant to dividend or interest reinvestment plan, please check the following box: [ ] If any of the securities being registered on this form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, other than securities offered only in connection with dividend of interest reinvestment plans, check the following box. [X] If this form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. [ ] __________ If this form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. [ ] ___________ If delivery of the prospectus is expected to be made pursuant to Rule 434, please check the following box. [ ] TERMINATION OF REGISTRATION This Post-Effective Amendment No. 1 relates to the Registration Statement on Form S-3 (Registration No. 333-105405) filed by LabOne, Inc. (the "Company") with respect to the registration of 283,998 shares of common stock of the Company to be sold by certain selling stockholders. The selling stockholders have informed the Company that all of the 283,998 shares have been sold. Accordingly, the registration of such securities is hereby terminated. 2 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-3 and has duly caused this Post-Effective Amendment No. 1 to the Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Lenexa, State of Kansas, on this 6th day of August, 2003. LABONE, INC. By:* /s/ W. Thomas Grant II ------------------------- W. Thomas Grant II Chairman of the Board, President and Chief Executive Officer PURSUANT TO THE REQUIREMENTS OF THE SECURITIES ACT OF 1933, AS AMENDED, THIS POST-EFFECTIVE AMENDMENT NO. 1 TO THE REGISTRATION STATEMENT HAS BEEN SIGNED BY THE FOLLOWING PERSONS IN THE CAPACITIES AND ON THE DATES INDICATED: SIGNATURE TITLE DATE * /s/ W. Thomas Grant II Chairman of the Board, President August 6, 2003 ----------------------- and Chief Executive Officer W. Thomas Grant II (Principal Executive Officer) * /s/ W. John W. McCarty Executive Vice President and August 6, 2003 ----------------------- Chief Financial Officer (Principal John W. McCarty Financial and Accounting Officer) * /s/ W. Roger Drury Director August 6, 2003 ----------------------- W. Roger Drury * /s/ D. Scott Mackesy Director August 6, 2003 ----------------------- D. Scott Mackesy * /s/ Paul B. Queally Director August 6, 2003 ----------------------- Paul B. Queally * /s/ James R. Seward Director August 6, 2003 ----------------------- James R. Seward 3 * /s/ Sean M. Traynor Director August 6, 2003 ------------------------ Sean M. Traynor * /s/ John E. Walker Director August 6, 2003 ----------------------- John E. Walker *By: /s/ Joseph C. Benage ----------------------- Joseph C. Benage Attorney-in-Fact 4