Quest Diagnostics Incorporated
The largest clinical laboratory testing company in the United States, headquartered in Secaucus, New Jersey.
Company Type
public
Founded
1967
Headquarters
Secaucus, New Jersey, USA
Stock
New York Stock Exchange: DGX
Revenue
Approximately $12.1 billion (FY2026 guidance)
Employees
Approximately 55,000
Primary Market
United States
Quest Diagnostics Incorporated Timeline
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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.
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.
History of Quest Diagnostics Incorporated
Paul Brown founded Metropolitan Pathology Laboratory in 1967, building it through regional lab consolidation into a national platform renamed Quest Diagnostics.
Decades of acquisition defined the company: Corning's lab business in 1996, SmithKline Beecham Clinical Laboratories in 1999, AmeriPath in 2007, and outreach labs across dozens of hospital systems.
Recent deals pushed into genetics, oncology, and Canada: Blueprint Genetics in 2020, Haystack Oncology for minimal residual disease testing in 2023, and Canadian leader LifeLabs in October 2024 for approximately C$1.35 billion.
Quest Diagnostics Incorporated Sustainability & Ethics
Quest operates community testing programs and publishes workforce, accessibility, and environmental goals in annual corporate responsibility reporting.
Controversy, Regulation & Public Scrutiny
The company operates under heavy CLIA, FDA, and state laboratory regulation and periodic reimbursement scrutiny. A 2024 data incident at a vendor affected some patient records; testing and data privacy practices remain under routine regulatory oversight.
Brands Owned by Quest Diagnostics Incorporated
Quest Diagnostics Incorporated owns 3 brands in our database. Explore the ownership tree below — click categories to expand and see individual brands.
Quest Diagnostics Incorporated
public · Founded 1967 · Secaucus, New Jersey, USA
3
brands
Stock Information
Quest Diagnostics Incorporated Ownership: Pros & Cons
Advantages
- +Largest US lab network with scale economics
- +Aging population and preventive care demand tailwinds
- +Consumer channel growing more than 30 percent
- +Hospital JV and outreach pipeline expanding share
Considerations
- -Reimbursement pressure from PAMA and payers
- -Revenue per requisition decline as routine mix grows
- -Labcorp and hospital insourcing competition
- -Integration load from recent acquisitions
Frequently Asked Questions 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.
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.
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