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

GENEVA--(BUSINESS WIRE)--The Commons Project Foundation and the World Economic Forum today announced the global expansion of the CommonTrust Network ( to cover 32...


Quest Diagnostics (NYSE: DGX), the world's leading provider of diagnostic information services, and Blueprint Genetics announced today that they will present results of 10 studies at the virtual...


Our Media Statement about COVID-19 Testing This is an evolving situation. Please check back to this page periodically for the latest information For more information, members of the media may...

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Quest Blog - Empowering better health with diagnostic insights.
Media Coverage
Quest Diagnostics had been preparing for 2020 for two years. As one of the top medical-testing providers in the nation, it first launched its consumer-initiated testing program, QuestDirect, at the end of 2018. Through it, consumers can visit the company's website and order at-home testing kits for 49 different conditions.
Fierce Biotech
Nearly six years after launching a joint venture with IQVIA’s contract research progenitor, Quintiles, Quest Diagnostics is handing over the remainder of its minority share in return for $760 million in cash.

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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