Quest Diagnostics empowers people to take action to improve health outcomes.
Company Overview

Quest Diagnostics empowers people to take action to improve health outcomes. Derived from the world's largest database of clinical lab results, our diagnostic insights reveal new avenues to identify and treat disease, inspire healthy behaviors and improve health care management. Quest annually serves one in three adult Americans and half the physicians and hospitals in the United States, and our 47,000 employees understand that, in the right hands and with the right context, our diagnostic insights can inspire actions that transform lives.


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Latest News

Stamford, Conn. – Sept. 13, 2023 – Americares and Quest Diagnostics, with the Quest Diagnostics Foundation, are teaming up to provide no-cost diagnostic services and expanded telehealth...


Quest Diagnostics Incorporated (NYSE: DGX), the world's leading provider of diagnostic information services, announced that Sam Samad, Executive Vice President and Chief Financial Officer, will...


Quest Diagnostics (NYSE: DGX), the leader in diagnostic information services, today released its 2022 Corporate Responsibility Report. The report provides information on the company's strategy...

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Quest Blog - Empowering better health with diagnostic insights.
Media Coverage
Westchester County Business Journal
Stamford-based Americares is partnering with Quest Diagnostics to provide 10 clinics across the U.S. with no-cost diagnostic services for one year as a means of increasing access to care for low-income, uninsured and underinsured patients.
Rutgers and Quest Diagnostics are expanding their collaboration to further improve access to critical primary care services for uninsured patients of the university’s Health Outreach Practice Experience (H.O.P.E.) Clinic in Plainfield. Resources from the Quest Diagnostics Foundation will enable the clinic to double its capacity by providing primary care services for a second day of the week.

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Quest Diagnostics Health Trends™

Quest Diagnostics Health Trends™ is a series of reports from Quest Diagnostics on health conditions affecting a large number of Americans. Published in peer-reviewed journals, at scientific conferences and widely as a public service, the reports are designed to inform health care professionals, patients and policymakers about the status of the nation’s health.


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At A Glance...

More than 6,600 patient access points, the most extensive network in the U.S., including phlebotomists in physician offices and more than 2,250 of our own patient service centers. A medical and scientific staff of more than 600 M.D.s and Ph.Ds. Logistics capabilities, that include approximately 3,750 courier vehicles and 25 aircraft that collectively make tens of thousands of stops daily.

Media Resources

Journalists may contact Quest Diagnostics by emailing