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 May 19, 2004 ------------------ (Date of earliest event reported) LABORATORY CORPORATION OF AMERICA HOLDINGS ------------------------------------------ (Exact name of registrant as specified in its charter) DELAWARE 1-11353 13-3757370 -------------- ----------- -------------- (State or other (Commission (IRS Employer jurisdiction of File Number) Identification incorporation) Number) 358 SOUTH MAIN STREET, BURLINGTON, NORTH CAROLINA 27215 ------------------------------------------------------- (Address of principal executive offices) 336-229-1127 ------------ (Registrant's telephone number, including area code) ITEM 9. Regulation FD Disclosure On May 19, 2004, Laboratory Corporation of America -Registered Trademark- Holdings (LabCorp -Registered Trademark-)(NYSE:LH) announced that Thomas P. Mac Mahon, Chairman and Chief Executive Officer, is scheduled to speak at the Banc of America Securities Health Care Conference in Las Vegas, NV on May 20, 2004 at 10:00 a.m. Pacific Time. A live audio webcast of the presentation will be available via the Company web site at www.LabCorp.com. A replay of the audio webcast will be available through June 3, 2004. 99.1 Press release of the Company dated May 19, 2004. SIGNATURES Pursuant to the requirements of the Securities and Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. LABORATORY CORPORATION OF AMERICA HOLDINGS ------------------------------------------ (Registrant) By:/s/ BRADFORD T. SMITH ---------------------------------- Bradford T. Smith Executive Vice President and Secretary Date: May 19, 2004