EXECUTION COPY AMENDMENT NO. 1 dated as of September 21, 2006 (this "Amendment"), to the CREDIT AGREEMENT dated as of January 13, 2005 (the "Credit Agreement"), among LABORATORY CORPORATION OF AMERICA HOLDINGS, a Delaware corporation (the "Borrower"),...Credit Agreement • November 2nd, 2006 • Laboratory Corp of America Holdings • Services-medical laboratories • New York
