Quest Diagnostics Incorporated provides diagnostic testing information services in the United States and internationally. The company offers clinical testing services, such as routine testing, gene-based and esoteric testing, anatomic pathology services, and drugs-of-abuse testing, as well as related services and insights; laboratory testing services for new drugs, vaccines, and medical devices; analytic, on-site prevention, and wellness services; laboratory outreach services; and risk assessment services for the life insurance industry. It also develops, manufactures, and markets diagnostic products, including Simplexa molecular chemistries for testing infectious disease and hospital-acquired infections; HerpeSelect HSV serology; and DxSelect IFA and ELISA products for testing infectious diseases. In addition, the company offers molecular diagnostic products in various segments, such as HIV-1 drug resistance testing under the ViroSeq brand name; and reproductive genetics and transplantation under the Atria and AlleleSeqr brand names. Further, it provides Care360 EHR, a solution that allows doctors to electronically create, manage, and distribute patient encounter notes, as well as for patient communication through a patient portal; and ChartMaxx, an enterprise content management system for hospitals. The company primarily offers its diagnostic information services under the Quest Diagnostics, AmeriPath, Dermpath Diagnostics, Focus Diagnostics, Athena Diagnostics, ExamOne, Solstas, and Summit Health brands to patients, physicians, hospitals, accountable care organizations, integrated delivery networks, health plans, employers, and other customers through a network of laboratories, patient service centers, and phlebotomists in physician offices. Quest Diagnostics Incorporated was founded in 1967 and is headquartered in Madison, New Jersey.