Company Nickname: Quest
Public or Private: Public
Quest Diagnostics Incorporated is a Fortune 500 company providing clinical laboratory services with headquarters in Madison, New Jersey. Founded in 1967 as Metropolitan Pathology Laboratory, Inc., it became an independent corporation with the Quest name on December 31, 1996. In addition to the United States, Quest Diagnostics also runs operations in United Kingdom, Mexico, Brazil, Puerto Rico, and a laboratory in India and also has collaborative agreements internationally with various hospitals and clinics.