Quest Diagnostics Inc. is a Fortune 500 Company with its headquarters in Madison, New Jersey. Quest Diagnostics was founded in 1967 under the name Metropolitan Pathology Laboratory, Inc. Offering clinical laboratory services, it became an independent corporation in 1996, changing its name to Quest Diagnostics. The company also has operations in Mexico, Brazil, India, the United Kingdom and Puerto Rico and a number of hospitals and clinics in other international locations. With around 44,000 employees, Quest Diagnostics generates over $7 billion in revenue. They deliver access to diagnostic testing for cardiovascular disease, infectious disease, cancer and neurological disorders.