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

Resources focus on children’s wider circle of care by supporting parents and caregivers in communicating with providers, through videos, interactive role-playing, digital storybooks, printable...


New capabilities include personalized patient access to Quest's national network of 2,100 patient service centers and 5,000 mobile and at-home phlebotomists, to support patient-compliant pre- and...


New Panels Aimed at the Millions of Americans Still Suffering From COVID-19 Side Effects SECAUCUS, N.J., March 21, 2023 /PRNewswire/ -- The consumer-initiated testing business from the leader in...

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Quest Blog - Empowering better health with diagnostic insights.
Media Coverage
Doctors and drug companies are also warming to the medical possibilities of ceramides. Later this year, lab testing giant Quest Diagnostics will start to offer the analysis, potentially making it available to many more patients.
Health News
Diagnosing Alzheimer’s disease before symptoms develop may soon be as simple as getting a blood test. New blood tests for certain biomarkers show promise, providing physicians an alternative to expensive scans or invasive spinal taps to make a diagnosis. Quest AD-Detect: Introduced by Quest Diagnostics, this blood test also measures beta-amyloid proteins in your blood to determine your risk for developing Alzheimer’s disease. It does not determine if you have any genetic biomarkers for the disease. The test became available in May 2022, with a cost of $500. There is limited coverage by some health plans.

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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