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

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...


Carnival Corporation & plc (NYSE/LSE: CCL;NYSE: CUK), the world's largest cruise company, today announced a new initiative making pre-board testing more convenient and accessible for its guests....


Quest Diagnostics Incorporated (NYSE: DGX), the world's leading provider of diagnostic information services, today updated its financial outlook for full year 2021. Since the company reported its...

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Quest Blog - Empowering better health with diagnostic insights.
Media Coverage
Crain's New York Business
Illustrating the extent of the boom, Quest Diagnostics on Thursday raised its full-year revenue outlook by hundreds of millions of dollars. The Secaucus, N.J.–based company cited "stronger than anticipated" demand for its molecular Covid tests since it released its second quarter financial results and full-year guidance on July 22.
The Philadelphia Inquirer
A new study suggests that U.S. cancer diagnoses have declined because of pandemic-related upheaval. Researchers from Quest Diagnostics used records of newly diagnosed cancer patients who received testing at Quest. In the year before the pandemic hit, the monthly average of new diagnoses was 32,000. In the most recent period, November 2020 to March 2021, the monthly average was about 26,000 — suggesting thousands of people skipped screening tests or checkups in the last year.

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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