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.


Learn More

Latest News

Quest will provide research consulting, laboratory testing and data analytics services to generate diagnostics insights supporting population health strategy for hepatitis C SECAUCUS, N.J., Dec....


Quest Diagnostics (NYSE: DGX), the world's leading provider of diagnostic information services, today announced that for the seventh straight year it has received a score of 100% on the Human...


Relationship leverages Quest's sequencing and specimen collection expertise with Scipher's precision medicine technology SECAUCUS, N.J. and WALTHAM, Mass., Nov. 28, 2023 /PRNewswire/ -- Quest...

All Releases


Quest Blog - Empowering better health with diagnostic insights.
Media Coverage
Precision Medicine Online
Scipher Medicine and Quest Diagnostics have announced a multiyear collaboration to expand access to diagnostic services for patients with rheumatoid arthritis (RA).
Quest Diagnostics is teaming up with a Spain-based biotech to bring an advanced colorectal cancer screening blood test to the U.S. Under the new partnership, the Secaucus-headquartered testing provider will work with UDX to develop and seek U.S. Food and Drug Administration premarket approval for a novel “liquid biopsy” blood test to screen for colorectal cancer, the third leading cause of cancer death in the country, according to a Nov. 20 announcement.

All Coverage

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.


See All

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