BURLINGTON, N.C. & SOUTH SAN FRANCISCO, Calif.--(BUSINESS WIRE)--Laboratory Corporation of America® Holdings (NYSE: LH) and Monogram Biosciences, Inc. (NASDAQ: MGRM) today announced that the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, or HSR Act, applicable to the acquisition of Monogram by LabCorp has expired with no action by either the Federal Trade Commission or the U.S. Department of Justice.