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

Quest Diagnostics works across the healthcare ecosystem to create a healthier world, one life at a time. We provide diagnostic insights from the results of our laboratory testing to empower people, physicians and organizations to take action to improve health outcomes. Derived from one of the world's largest databases of de-identifiable clinical lab results, Quest's diagnostic insights reveal new avenues to identify and treat disease, inspire healthy behaviors and improve healthcare management. Quest Diagnostics annually serves one in three adult Americans and half the physicians and hospitals in the United States, and our nearly 55,000 employees understand that, in the right hands and with the right context, our diagnostic insights can inspire actions that transform lives and create a healthier world.

Latest News
12192025

Quest Diagnostics Incorporated (NYSE: DGX), a leading national provider of diagnostic information services, announced that Jim Davis, Chairman, CEO and President, and Sam Samad, Executive Vice...

11112025

Quest Diagnostics (NYSE: DGX), a leader in diagnostic information services, today announced that its Board of Directors declared a quarterly cash dividend of $0.80 per share, payable on January...

11032025

Quest Diagnostics Incorporated (NYSE: DGX), a leader in diagnostic information services, announced that Sam Samad, Executive Vice President and Chief Financial Officer, will speak on the company's...

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Newsroom

Quest Blog - Empowering better health with diagnostic insights.
Media Coverage
12172025
Clinical Laboratory Products
AI, new diagnostics, and shifting care delivery models are among the clinical laboratory predictions for 2026. Cardiometabolic testing is one example, where labs are being asked to look beyond single endpoints. “In 2025, we saw many individuals focus on weight loss as a means of potentially improving their cardiometabolic health,” says Mouris Saghir, PhD, vice president and general manager for cardiometabolic, endocrine, and wellness at Quest Diagnostics.
12102025
Axios
Lab testing companies including giants Quest Diagnostics and LabCorp are pressing Congress to stop hundreds of millions of dollars of Medicare cuts for diagnostic tests that are due to take effect at the end of January. Their push could add to the health care issues piling up on lawmakers' plates as the calendar flips over. Clinical lab companies say letting the cuts take effect will leave them with less money to spend on creating new diagnostics or technologies to generate quicker results. "Labs play a critical part in trying to keep the nation well — identifying that risk before it ever even happens," said Yuri Fesko, chief medical officer at Quest.

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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...

Quest provides thousands of laboratory tests, ranging from advanced genomic tests for cancer and rare diseases to routine preventive tests for heart disease, diabetes and other chronic conditions. Our medical and scientific staff consists of 850 M.D.s and Ph.Ds. We maintain approximately 8,000 patient access points, including approximately 2,000 Quest patient service centers, and a logistics team with 5,000 courier vehicles and nearly 20 aircraft in the United States.

Media Resources

Journalists may contact Quest Diagnostics by emailing mediacontact@questdiagnostics.com