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

Quest Diagnostics Incorporated (NYSE: DGX), the world's leading provider of diagnostic information services, announced that it will report third quarter 2022 financial results on Thursday, October...


Quest Diagnostics (NYSE: DGX), the world's leading provider of diagnostic information services, and Lee Health, Southwest Florida's primary community-owned health system, are teaming up to enhance...


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
Physician's Weekly
Dr. Jeffrey Dlott shares lessons 1 year after the National Kidney Foundation removed race from the kidney function equation. Since the COVID-19 pandemic first began, gaps in care across the United States have magnified exponentially. Long-standing disparities affecting different racial and ethnic subpopulations reached the forefront of public consciousness, with COVID-19 demonstrating the critical role of social determinants of health on care and outcomes.
One day you’re in active treatment for breast cancer, and the next you’re not. You may have expected to feel “normal” at this point, but it’s not happening. Not physically and not emotionally. Because the initial focus is on treatment, the aftereffects can come as quite a shock. While everyone’s experiences are different, this article will cover some common challenges of life after breast cancer. Dr. Yuri Fesko is an oncologist and senior medical director of oncology and pharma services at Quest Diagnostics. He told Healthline that side effects can develop months or even years after treatment ends. “Each patient’s experience is unique, so even if two individuals share the same diagnosis and received the same treatment, how their bodies cope and the side effects they experience or are impacted by can be completely different.”

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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