Who Owns Quest Diagnostics?
Quest Diagnostics is the flagship clinical laboratory brand of Quest Diagnostics Incorporated (NYSE: DGX), headquartered in Secaucus, New Jersey. Founded in 1967, it is the largest US provider of diagnostic information services, serving one in three American adults each year.
Parent Company
Founded
1967
Status
Publicly Traded
Headquarters
United StatesOfficial Website
Who Owns Quest Diagnostics?
- Parent Company: Quest Diagnostics Incorporated
- Ownership Type: Brand division
- Company Type: Publicly Traded
- Stock Ticker: New York Stock Exchange: DGX
| Brand | Parent Company | Ownership Type |
|---|---|---|
| Quest Diagnostics | Quest Diagnostics Incorporated | Brand division |
Where to Buy
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History of Quest Diagnostics
- Founded: 1967
- Founders: Paul Brown
Paul Brown founded Metropolitan Pathology Laboratory in 1967, expanding through acquisitions of Corning's labs, SmithKline Beecham Clinical Laboratories, and dozens of regional and specialty operations.
The brand unified a national network of labs and patient service centers and recently extended through Blueprint Genetics, Haystack Oncology, LifeLabs, and the Corewell Health joint venture completed January 2026.
About Quest Diagnostics Incorporated
Is Quest Diagnostics publicly traded?
Yes. It trades on the NYSE under ticker DGX.
Did Quest acquire LifeLabs?
Yes. Quest completed the roughly C$1.35 billion acquisition of Canada's LifeLabs in October 2024.
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Who is the CEO of Quest Diagnostics?
Jim Davis, chairman, chief executive officer, and president.
How big is Quest Diagnostics?
It serves one in three American adults each year and guides to about $12.1 billion in FY2026 revenue.
- Founded: 1967
- Headquarters: Secaucus, New Jersey, USA
- Company Type: Publicly Traded
- Stock: New York Stock Exchange: DGX
- Revenue: Approximately $12.1 billion (FY2026 guidance)
- Employees: Approximately 55,000
Where Is Quest Diagnostics Made / Based?
- Headquarters: Secaucus, New Jersey, USA
Quest Diagnostics Categories & Tags
Brands Owned by Quest Diagnostics Incorporated
Healthcare PharmaceuticalsBlueprint Genetics
Owned by Quest Diagnostics Incorporated
The genetic testing subsidiary of Quest Diagnostics, specializing in rare inherited disease diagnostics.
genetic-testingrare-diseasegenomics
Healthcare PharmaceuticalsLifeLabs
Owned by Quest Diagnostics Incorporated
Canada's largest community laboratory brand, owned by Quest Diagnostics since October 2024.
lab-testingdiagnosticscanada
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Quest Diagnostics Ownership: Pros & Cons
Advantages
- +Largest US lab network and logistics scale
- +Growing consumer and hospital JV channels
- +Advanced diagnostics in oncology and genetics
Considerations
- -Reimbursement pressure
- -Labcorp competition
- -Routine-mix revenue per test decline
Frequently Asked Questions About Quest Diagnostics
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Sources & Further Reading
- Quest Diagnostics official website
- Quest Diagnostics Incorporated company page - /companies/quest-diagnostics
Competitors to Quest Diagnostics
These competing brands operate in the same categories and provide similar products or services. Compare key attributes to understand market positioning and competitive landscape.
| Brand | Parent Company | Country | Founded | Market Position | Primary Market | Gender Target |
|---|---|---|---|---|---|---|
| Quest Diagnostics | Canada | 1969 | Mass market | Regional | All Genders | |
| Ge Healthcare | USA | 2023 | Mass market | Global | All Genders | |
| Labcorp | USA | 1995 | Mass market | United states | All Genders | |
| Siemens | Germany | 2018 | Premium | Global | All-ages |
Learn More About Competitors
Healthcare PharmaceuticalsLifeLabs
Owned by Quest Diagnostics Incorporated
Canada's largest community laboratory brand, owned by Quest Diagnostics since October 2024.
lab-testingdiagnosticscanada
Healthcare PharmaceuticalsGE Diagnostics
Owned by GE HealthCare Technologies Inc.
Pharmaceutical Diagnostics business of GE HealthCare, producing contrast agents and molecular imaging tracers including Omnipaque, Clariscan, Vizamyl, and Flyrcado used in diagnostic scans worldwide.
pharmaceuticalscontrast-agentsdiagnostics
Healthcare PharmaceuticalsLabcorp
Owned by Labcorp Holdings Inc.
Diagnostic testing brand of Labcorp Holdings Inc., running one of the world's largest clinical laboratory networks with over 2,000 patient service centers.
diagnosticslaboratory-testinghealthcare
Healthcare PharmaceuticalsSiemens Healthineers
Owned by Siemens AG
German medical technology and healthcare equipment company providing diagnostic imaging and laboratory diagnostics, owned by Siemens AG.
medical-technologyhealthcarediagnostics
Competitive Analysis
Market Positioning: Quest Diagnostics competes with 4 brands in the same categories, ranging from mass market to luxury positioning.
Geographic Distribution: Competitors are headquartered across multiple regions, indicating global competition in this market segment.
Brand Heritage: Competitor brands range from established heritage brands to newer market entrants, with founding years spanning several decades.
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Independent Alternatives to Quest Diagnostics
Looking for brands with different ownership structures? These similar brands are not owned by Quest Diagnostics Incorporated, giving you alternative choices that support different corporate structures.
Healthcare PharmaceuticalsBand-Aid
Owned by Kenvue
American adhesive bandage brand invented in 1921, owned by Kenvue Inc. Band-Aid is the leading adhesive bandage brand in the United States and is sold in more than 100 countries.
wound-careadhesive-bandagefirst-aid
Privately Owned
Band-Aid is privately owned, unlike Quest Diagnostics which is under a publicly traded parent company.
Healthcare PharmaceuticalsTylenol
Owned by Kenvue
American brand of pain relief medication and analgesic drugs, flagship product of Kenvue Inc., the consumer health company spun off from Johnson and Johnson in 2023. Kimberly-Clark is acquiring Kenvue in a deal closed on November 2, 2026.
pain-reliefmedicationpharmaceutical
Privately Owned
Tylenol is privately owned, unlike Quest Diagnostics which is under a publicly traded parent company.
Healthcare PharmaceuticalsWalgreens
Owned by Walgreens Boots Alliance
Walgreens is the largest U.S. pharmacy retail brand, operating roughly 8,000 stores. It went private in August 2025 under Sycamore Partners as a standalone company.
pharmacydrugstoreretail-pharmacy
Privately Owned
Walgreens is privately owned, unlike Quest Diagnostics which is under a publicly traded parent company.
Healthcare PharmaceuticalsZocdoc
Owned by Zocdoc, Inc.
Online healthcare marketplace where patients find in-network doctors and book appointments instantly, a private New York company valued at $1.8 billion.
healthcareappointment-bookingdigital-health
Privately Owned
Zocdoc is privately owned, unlike Quest Diagnostics which is under a publicly traded parent company.
Healthcare PharmaceuticalsAvaility
Owned by Availity
The largest real-time health information network in the US, owned by a consortium of major health insurers and Novo Holdings.
healthcare-technologyclearinghouseclaims-processing
Privately Owned
Availity is privately owned, unlike Quest Diagnostics which is under a publicly traded parent company.
Healthcare PharmaceuticalsBenadryl
Owned by Kenvue
American brand of antihistamine medication used to treat allergies, itching, and cold symptoms, manufactured and marketed by Johnson & Johnson.
antihistamineallergy-reliefcold-medicine
Privately Owned
Benadryl is privately owned, unlike Quest Diagnostics which is under a publicly traded parent company.
Quest Diagnostics Incorporated Stock Information
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