Quest Diagnostics Reports Second Quarter 2026 Financial Results; Raises Revenue and EPS Guidance for Full Year 2026

• Second quarter revenues of $3.04 billion, up 10.2% from 2025, with 10.0% organic revenue growth
• Second quarter reported diluted earnings per share ("EPS") of $2.84, up 15.0% from 2025; and adjusted diluted EPS of $3.12, up 19.1% from 2025
• Full year 2026 revenues now expected to be between $11.95 billion and $12.05 billion
• Full year 2026 reported diluted EPS now expected to be between $9.97 and $10.17; and adjusted diluted EPS expected to be between $11.05 and $11.25

SECAUCUS, N.J., July 23, 2026 /PRNewswire/ -- Quest Diagnostics Incorporated (NYSE: DGX), a leading provider of diagnostic information services, today announced financial results for the second quarter ended June 30, 2026.

"Our robust top- and bottom-line growth in the second quarter demonstrates focused execution of our strategy to connect people and providers to innovative testing and actionable insights that illuminate paths for better health," said Jim Davis, Chairman, CEO and President. "Revenues increased by over 10%, almost all from organic revenue growth across our physician, hospital and consumer channels, and adjusted diluted EPS grew over 19%. With strong growth and sustained demand for our diagnostic insights, we are again raising our full year guidance."

Recent Highlights:

Serving Customers and Delivering Innovations

• Continued to advance our Co-Lab Solutions implementation and joint venture laboratory with Corewell Health in Michigan and developed new capabilities in kidney care through our collaboration with Fresenius Medical Care in the United States.
• Generated robust revenue growth through questhealth.com and our consumer, wearable and wellness partners.
• Grew revenues by double-digits in several areas of Advanced Diagnostics, including Quest AD-Detect® blood tests for Alzheimer's disease and advanced cardiometabolic and endocrine tests, including liver fibrosis testing.
• Granted New York State approval for our Haystack MRD® test and became the largest reference lab to utilize Flatiron Health's OncoEMR® Molecular Profiling Integration (MPI) platform for select cancer tests, including Haystack MRD, starting with a pilot with American Oncology Network (AON).

Driving Operational Excellence

• In the lab, extended automation solutions to improve quality and productivity in cervical cancer screening and front-end specimen processing to additional labs.
• Outside the lab, launched IntelliDraw™ to guide clinical staff of our physician customers through specimen collection, to enhance quality and the service experience.

Updated Guidance for Full Year 2026

The company updates its full year 2026 guidance as follows:

Based on the favorable resolution of various tax contingencies in the second quarter, the full year adjusted effective tax rate is expected to be consistent with 2025.

Note on Non-GAAP Financial Measures

As used in this press release the term "reported" refers to measures under accounting principles generally accepted in the United States ("GAAP"). The term "adjusted" refers to non-GAAP operating performance measures that exclude special items such as restructuring and integration charges, amortization expense, excess tax benefits ("ETB") associated with stock-based compensation, gains and losses associated with changes in the carrying value of our strategic investments and other items.

Non-GAAP adjusted measures are presented because management believes those measures are useful adjuncts to GAAP results. Non-GAAP adjusted measures should not be considered as an alternative to the corresponding measures determined under GAAP. Management may use these non-GAAP measures to evaluate our performance period over period and relative to competitors, to analyze the underlying trends in our business, to establish operational budgets and forecasts and for incentive compensation purposes. We believe that these non-GAAP measures are useful to investors and analysts to evaluate our performance period over period and relative to competitors, as well as to analyze the underlying trends in our business and to assess our performance. The additional tables attached below include reconciliations of non-GAAP adjusted measures to GAAP measures.

Conference Call Information 

Quest Diagnostics will hold its quarterly conference call to discuss financial results beginning at 8:30 a.m. Eastern Time today.  The conference call can be accessed by dialing 888-455-0391 within the U.S. and Canada, or 773-756-0467 internationally, passcode: 7895081; or via live webcast on our website at www.QuestDiagnostics.com/investor.  We suggest participants dial in approximately 10 minutes before the call.

A replay of the call may be accessed online at www.QuestDiagnostics.com/investor or, from approximately 10:30 a.m. Eastern Time on July 23, 2026 until midnight Eastern Time on August 6, 2026, by phone at 866-388-5361 for domestic callers or 203-369-0416 for international callers.  Anyone listening to the call is encouraged to read our periodic reports, on file with the Securities and Exchange Commission, including the discussion of risk factors and historical results of operations and financial condition in those reports.

About Quest Diagnostics

Quest Diagnostics works across healthcare to create a healthier world, one life at a time. We help connect people, from clinicians to consumers, with laboratory insights that illuminate a path to better health. With a focus on delivering smarter, simpler testing, our insights reveal new avenues to identify and treat disease, inspire healthy behaviors and improve healthcare management. Quest Diagnostics serves half the physicians and hospitals in the United States and one in three adult Americans each year, and our nearly 60,000 employees work together to deliver diagnostic insights that inspire actions to transform lives. www.QuestDiagnostics.com.

Forward Looking Statements

The statements in this press release which are not historical facts may be forward-looking statements. Readers are cautioned not to place undue reliance on forward-looking statements, which speak only as of the date that they are made and which reflect management's current estimates, projections, expectations or beliefs and which involve risks and uncertainties that could cause actual results and outcomes to be materially different. Risks and uncertainties that may affect the future results of the company include, but are not limited to, uncertain and volatile economic conditions, adverse results from pending or future government investigations, lawsuits or private actions, the competitive environment, the complexity of billing, reimbursement and revenue recognition for clinical laboratory testing, changes in government policies, including related to trade, and regulations, changing relationships with customers, payers, suppliers or strategic partners, acquisitions and other factors discussed in the company's most recently filed Annual Report on Form 10-K and in any of the company's subsequently filed Quarterly Reports on Form 10-Q and Current Reports on Form 8-K, including those discussed in the "Business," "Risk Factors," "Cautionary Factors that May Affect Future Results" and "Management's Discussion and Analysis of Financial Condition and Results of Operations" sections of those reports.

This earnings release, including the attached financial tables, is available online in the Newsroom section at www.QuestDiagnostics.com.

ADDITIONAL TABLES FOLLOW

Notes to Financial Tables

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SOURCE Quest Diagnostics