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
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...

10272025

The Quest AD-Detect® blood-based test panels deliver confirmatory accuracy, potentially supporting reduced reliance on PET-imaging confirmation SECAUCUS, N.J., Oct. 27, 2025 /PRNewswire/ -- Two...

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Newsroom

Quest Blog - Empowering better health with diagnostic insights.
Media Coverage
11052025
The Clinical Advisor
Only approximately one-third of US adults diagnosed with hepatitis C virus (HCV) infection received treatment from 2014 to 2021, despite the widespread availability of curative therapies, according to study results published in the Journal of Viral Hepatitis. The US has the fifth highest burden of HCV worldwide. The World Health Organization (WHO) set a goal to eliminate HCV in 2030 by diagnosing at least 90% and treating at least 80% of individuals infected with HCV. Investigators analyzed deidentified data from 2 large commercial laboratories: LabCorp and Quest Diagnostics.
10302025
Clinical Laboratory Products
Self-collection for HPV and other infections offers a more convenient, private way to complete recommended screenings—helping reach women who might otherwise delay or skip care. By D. Alagia III, MD, MS, MBA, FACS, FACOG, Quest Diagnostics

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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