Quest Diagnostics

Quest Diagnostics

Operates nationwide clinical laboratory testing

Overview

Quest Diagnostics provides clinical laboratory testing and diagnostic services. It processes patient samples across a network of laboratories to run a broad menu of 3,000+ tests, including cancer diagnostics and anatomical pathology, and delivers interpretive reports through its medical staff. Tests are performed at its patient service centers, esoteric and rapid-response labs, and outpatient facilities, with results shared with clinicians via connected data systems. What sets Quest Diagnostics apart is its scale and scope: the world’s largest clinical lab network, the broadest test menu, a large team of MDs and PhDs for interpretation, and leadership in cancer diagnostics and pre-employment drug testing, plus extensive clinical trials testing. Its goal is to empower healthcare providers and patients with actionable diagnostic insights to identify, treat, and manage disease, inspire healthy behaviors, and improve health outcomes.

About Quest Diagnostics

Simplify's Rating
Why Quest Diagnostics is rated
B
Rated A on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Data & Analytics

Healthcare

Company Size

10,001+

Company Stage

IPO

Headquarters

Madison, Wisconsin

Founded

1967

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Simplify's Take

What believers are saying

  • Q1 2026 revenue grew 9.2% to $2.9 billion, and guidance increased.[2][3]
  • Advanced diagnostics delivered double-digit growth, expanding higher-value oncology and molecular testing.[2][5]
  • Fresenius and Corewell added about 7% to organic volume growth, supporting scale.[5]

What critics are saying

  • Revenue per requisition fell 1.3% because partner volume skewed toward routine testing.[1]
  • Heavy dependence on payer reimbursement exposes Quest to Medicare fee-schedule resets.[1][2]
  • The $500 million senior notes issue increases leverage and interest expense pressure.[8]

What makes Quest Diagnostics unique

  • Quest Diagnostics pairs national lab scale with physician, hospital, and consumer channels.[1][5]
  • Its revenue mix blends routine testing, advanced diagnostics, and partner-led volume growth.[1][2]
  • Invigorate, automation, and AI improve productivity across labs and customer service.[2][5]

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Funding

Total Funding

$1.3B

Above

Industry Average

Funded Over

2 Rounds

Post IPO Debt funding comparison data is currently unavailable. We're working to provide this information soon!
Post IPO Debt Funding Comparison
Coming Soon

Stock Price

Company News

PR Newswire
Mar 18th, 2026
Quest Diagnostics to offer Helio Genomics' AI-powered liver cancer blood test across US network

Helio Genomics has partnered with Quest Diagnostics to make HelioLiver, an AI-powered blood test for early detection of hepatocellular carcinoma, widely available across the United States. Starting in April, healthcare providers with Quest accounts can order the test through Quest's network of approximately 7,700 patient service centres. HelioLiver combines cell-free DNA methylation patterns, protein biomarkers and patient demographics using a proprietary AI algorithm. The test offers superior sensitivity to ultrasound for early-stage detection in high-risk individuals, such as those with cirrhosis or hepatitis B. Liver cancer incidence rates have tripled since 1980, with mortality doubling. When detected early, the five-year survival rate reaches 70%. However, 80% to 90% of eligible adults skip recommended ultrasounds. Helio Genomics will continue performing tests at its West Lafayette laboratory.

The Astorian
Mar 18th, 2026
Helio Genomics to make HelioLiver(TM) cancer test accessible to Quest Diagnostics' providers.

Helio Genomics to make HelioLiver(TM) cancer test accessible to Quest Diagnostics' providers. PR Newswire Today at 5:42am PDT Quest's Infrastructure to Enable Access to HelioLiver(TM), an AI-Powered, Blood-Based Test for Early Detection of Liver Cancer IRVINE, Calif., March 18, 2026 /PRNewswire/ - Helio Genomics, an AI-powered TechBio company focused on early cancer detection, today announced an agreement with Quest Diagnostics, a leading provider of diagnostic information services, to make HelioLiver(TM), Helio Genomics' innovative blood-based early detection test for Hepatocellular Carcinoma (HCC), widely available to physicians and patients through Quest's extensive U.S. network. The test aims to help power earlier intervention in patients who are at risk of developing HCC, the most common primary liver cancer. Starting in April, any healthcare provider with a Quest account will be able to order the test. HelioLiver(TM) is designed to fit into routine liver cancer surveillance with a simple blood draw. By integrating cell-free DNA methylation patterns, protein biomarkers, and patient demographics using a proprietary AI algorithm, HelioLiver(TM) aims to provide an additional source of risk and disease signal at an early stage, even when ultrasound findings may be limited or not yet definitive. "This agreement with Quest Diagnostics is an important step in our mission to democratize early cancer detection," said Dr. Bharat Tewarie, CEO of Helio Genomics. "By harnessing Quest's vast scale and infrastructure, our goal is to expand access to tools that physicians can use to aid detection of liver cancer at its most treatable stage, ultimately driving better patient outcomes and redefining survivorship in oncology." The HelioLiver(TM) test addresses critical gaps in current methods, offering superior sensitivity to ultrasound for early-stage detection in high-risk individuals[1,2,3], such as those with cirrhosis or hepatitis B. (Current AASLD guidelines recommend that these patients undergo routine testing every six months) Under the agreement, Quest's provider clients will be able to directly access HelioLiver through their existing Quest account and electronic health record (EHR) and utilize Quest's approximately 7,700 patient service centers and in-office phlebotomists in the U.S. Helio will continue to perform HelioLiver testing at its laboratory in West Lafayette, In. "Liver cancer represents a growing public health imperative, and our collaboration with Helio Genomics underscores our belief in the potential of liquid biopsy to aid early detection of cancer," said Asia Chang, vice president and general manager of Oncology, Quest Diagnostics. "Through this arrangement, Helio Genomics will be able to use Quest's scale to reach more patients and their care teams." Liver cancer is emerging as a silent epidemic in the U.S., often going undetected until advanced stages due to the absence of early symptoms. It ranks among the fastest-rising causes of cancer-related deaths, with incidence rates tripling and mortality doubling since 1980 [4]. When identified early, the five-year survival rate soars to 70 percent [5]. Eighty to ninety percent of eligible adults skip recommended ultrasounds due to inconvenience, access issues, or other barriers [1] [,6]. HelioLiver(TM) overcomes these challenges with its blood-based approach, facilitating early detection when curative treatments are most effective. The test is now commercially available nationwide from Helio Genomics. About Helio Genomics Helio Genomics is a commercial-stage, AI-driven TechBio company revolutionizing diagnostics for early cancer detection and minimal residual disease monitoring. Its advanced multi-analyte blood-based platform harnesses machine learning and deep learning to detect cancer biomarkers, enabling clinicians and patients to respond decisively against cancer. For more information, visit www.heliogenomics.com. Media Contact: Danielle Fox, [email protected], (360) 509-9527 About HelioLiver(TM) HelioLiver(TM) is a blood-based test for early detection of hepatocellular carcinoma (HCC), the most common form of liver cancer. By combining cell-free DNA methylation patterns, protein biomarkers, and patient demographics using a proprietary AI algorithm. In a prospective clinical study it outperformed traditional ultrasound in identifying small tumors in high-risk patients. [2] [,] [3] This simple blood draw addresses screening barriers, boosting early detection rates, and improving outcomes for Individuals with risk factors for liver cancer, including Liver cirrhosis (from Hepatitis B, C, alcohol, obesity, MASLD, and Chronic Hepatitis B infection.) Clinically validated in multicenter studies involving thousands of patients, Helio Genomics is expanding its commercial footprint to combat this pressing health challenge. About Quest Diagnostics Quest Diagnostics works across healthcare to create a healthier world, one life at a time. The Daily Astorian connect people, from clinicians to consumers, with laboratory insights that illuminate a path to better health. With a focus on delivering smarter, simpler testing, The Daily Astorian help reveal new avenues to identify and treat disease, empower healthy behaviors and improve healthcare management. Quest Diagnostics serves half the physicians and hospitals in the United States and one in three American adults each year, and its nearly 57,000 employees work together to deliver diagnostic insights that inspire actions to transform lives. www.QuestDiagnostics.com SOURCE Helio Genomics This is a paid placement. For further inquiries, please contact PR Newswire directly.

Quest Diagnostics
Mar 12th, 2026
Quest Diagnostics Elects Timothy Wentworth, Former CEO of Walgreens Boots Alliance, Evernorth Health Services and Express Scripts, to Board of Directors

Quest Diagnostics elects Timothy Wentworth, former CEO of Walgreens Boots Alliance, Evernorth Health Services and Express Scripts, to board of directors. SECAUCUS, N.J., March 12, 2026 /PRNewswire/ - Quest Diagnostics Incorporated (NYSE: DGX), a leading provider of diagnostic information services, today announced that its board of directors has elected Timothy (Tim) Wentworth, a highly seasoned business leader, to serve as a director. Including Mr. Wentworth, the company's board has eleven members. "As a former CEO of several large, publicly traded healthcare organizations, Tim brings incredible leadership experience to the Quest board," said Jim Davis, chairman, CEO and president of Quest Diagnostics. "His depth in the many channels Quest serves, including health plan, employer and consumer, combined with his real-world operations and HR expertise, makes him an exceptional addition to the Quest team as we work together to create a healthier world, one life at a time." Mr. Wentworth, 65, was most recently chief executive officer (CEO) of Walgreens Boots Alliance, where he helped restructure the company for its sale to Sycamore Partners in mid-2025. Prior to that, he was founding CEO of Evernorth Health Services, the health services organization of The Cigna Group that partners with health plans, employers and government organizations to deliver pharmacy, care, and benefit solutions. In addition, Mr. Wentworth was president and CEO of Express Scripts, one of the largest pharmacy benefit managers in the United States, following the company's 2012 acquisition of Medco Health Solutions, where he held roles as group president, employer accounts and president and CEO of Medco's Accredo Health specialty pharmacy business. With the Medco transaction, Express Scripts grew into a Fortune 25 company with more than $100 billion in revenues before its acquisition by Cigna in 2018. Mr. Wentworth's experience also includes senior leadership roles with top consumer brands, including chief operating officer at Mary Kay, Inc., and director roles in human resources at PepsiCo, Inc. Timothy M. Ring, lead independent director, added: "Tim is an accomplished business leader who knows how to run highly complex, industry-leading healthcare companies to generate growth and value at scale. We are fortunate to welcome him to our board." Mr. Wentworth serves on the boards of directors of Walgreens Holding Company and Dfinitiv, and previously served on the boards of Walgreens Boots Alliance, Accredo Health Group, Express Scripts, and Forge Health. He earned his bachelor's degree in industrial and labor relations from Cornell University and an associate in applied science degree in business administration from Monroe Community College. About Quest Diagnostics Quest Diagnostics works across healthcare to create a healthier world, one life at a time. Quest Diagnostics Incorporated connect people, from clinicians to consumers, with laboratory insights that illuminate a path to better health. With a focus on delivering smarter, simpler testing, Quest Diagnostics Incorporated help reveal new avenues to identify and treat disease, empower healthy behaviors and improve healthcare management. Quest Diagnostics serves half the physicians and hospitals in the United States and one in three American adults each year, and its nearly 57,000 employees work together to deliver diagnostic insights that inspire actions to transform lives. www.QuestDiagnostics.com SOURCE Quest Diagnostics For further information: For further information: Dan Haemmerle (Investors): 973-520-2900 or Wendy Bost (Media): 973-520-2800

Business Wire
Mar 10th, 2026
Guardant Health's Shield blood test for colorectal cancer now available through Quest Diagnostics' 650K US provider network

Guardant Health has partnered with Quest Diagnostics to make its Shield blood-based colorectal cancer screening test widely accessible through Quest's nationwide network. Providers can now order Shield through their existing Quest accounts and electronic health records. Shield is the first FDA-approved blood test for primary colorectal cancer screening in average-risk adults aged 45 and older. Quest's network reaches nearly 650,000 clinician and hospital accounts annually, with approximately 2,000 patient service centres and 6,000 in-office phlebotomists available for blood draws. The test has demonstrated 93% completion rates in real-world use among the first 100,000 orders, significantly improving on traditional screening adherence. Shield is currently covered by Medicare, Veterans Affairs Community Care Network and TRICARE, and is commercially available across the US.

PR Newswire
Mar 2nd, 2026
Quest Diagnostics launches AI companion powered by Google's Gemini to analyse five years of patient lab data

Quest Diagnostics has launched Quest AI Companion, an AI-powered chat feature that helps patients analyse and understand their laboratory test results. Built on Google's Gemini models, the tool is available through the company's secure MyQuest mobile app and portal. The AI Companion can access and analyse up to five years of a patient's Quest lab data to identify health trends and patterns. It explains medical terminology, interprets lab values, and helps users compose questions for their healthcare providers. The tool operates within Quest's HIPAA-compliant platform, addressing privacy concerns associated with public AI tools. The feature resulted from Quest's strategic collaboration with Google Cloud, established in 2024. Quest AI Companion is available to all adult MyQuest users and is intended for educational purposes only, not as a substitute for professional medical advice.

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