Quest Diagnostics

Almost $20 trillion in revenue—and a record-breaking $1.87 trillion in profits. Introducing the 2025 Fortune 500, the definitive list of the biggest companies in America.

F500 2025-Quest Diagnostics

<p>Quest Diagnostics is a major diagnostic testing company, offering lab and direct-to-consumer tests that touch one in three U.S. adults every year and half the nation’s hospitals and doctors. Since its 1967 founding, the company has grown to have a presence in 130 countries. It works with hospitals, doctors, patients, insurers, government agencies, employers, and pharmaceutical companies, with more than 2,250 locations in the U.S. Quest operates under the Quest Diagnostics brand, as well as under the AmeriPath, Dermpath Diagnostics, ExamOne, and Quanum brands.</p>

Fortune 500

The 300 companies on this year’s list brought in over $12.6 trillion in revenue for the latest 12 months, with the median revenue figure at $22 billion.

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World's Most Admired Companies

Industries included in the sector are insurance and managed care, medical products and facilities, pharmacy services, and pharmaceutical companies.

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F500-2021-324-Quest Diagnostics

Millions of people turn to the laboratory company to conduct the important tests that track cholesterol levels, white blood cell count, and other crucial measurements that ensure healthy lives. Quest Diagnostics also helps pharmaceutical companies conduct the clinical trials that could lead to life-saving treatments.

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Quest Diagnostics Flies Coronavirus Tests and Samples Across the United States

The clinical diagnostics company’s services range from routine blood work to gene-based testing.

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Get insights into Quest Diagnostics including business profile, stock information, news, and rankings from Fortune.

Quest Diagnostics (DGX): Company Profile, Stock Price, News, Rankings

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Quest Diagnostics | Fortune

Quest Diagnostics (DGX): Company Profile, Stock Price, News, Rankings | Fortune

Quest Diagnostics will be the first to utilize this method.


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