QUEST DIAGNOSTICS INC
Quest Diagnostics Incorporated is an American clinical laboratory. A Fortune 500 company, Quest operates in the United States, Puerto Rico, Mexico, and Brazil. Quest also maintains collaborative agreements with various hospitals and clinics across the globe.
Basic company information
Each field links to its source. Financial figures retain their reporting periods; background references are identified in the source list.
- Business sectors
- health care [1]
- Company / filing name
- QUEST DIAGNOSTICS INC [2]
- Headquarters location
- Madison; Secaucus [1]
- Founded
- 1967 [1]
- Legal form
- Delaware corporation [1]
- Leadership in background record
- Steve Rusckowski [1]
- Founders
- Paul A. Brown [1]
- Official website
- www.questdiagnostics.com ↗ [1]
- Annual revenue
- USD 9,883,000,000 · reported year 2022 [1]
- CIK
- 1022079 [2]
- Country in background record
- United States [1]
- Symbols / exchanges
- DGX (NYSE) [2]
Company positioning and business
Quest Diagnostics Incorporated is an American clinical laboratory. A Fortune 500 company, Quest operates in the United States, Puerto Rico, Mexico, and Brazil. Quest also maintains collaborative agreements with various hospitals and clinics across the globe. [3]
As of 2020, the company had approximately 48,000 employees, and it generated more than $7.7 billion in revenue in 2019. The company offers access to diagnostic testing services for cancer, cardiovascular disease, infectious disease, neurological disorders, COVID-19, and employment and court-ordered drug testing. [3]
Background text: Wikipedia contributors, Quest Diagnostics. Selected introductory paragraphs, licensed under CC BY-SA 4.0. Official filing data is cited separately.
Management and corporate governance
The Wikidata background record identifies Steve Rusckowski in the chief-executive role. This background entry is not an official confirmation of the current board or executive roster. [1]
Understanding company scale
Annual revenue: USD 9,883,000,000 · reported year 2022. [1]
Financial year, securities and disclosures
Listed securities: DGX (NYSE). Multiple symbols may represent different share classes or securities of the same registrant. [2]
History and key events
Founding / inception date recorded in Wikidata. [1]
Financial results and regulatory disclosures
No individual financial documents have been indexed yet. Open the source to consult company disclosures. [2]
Related entities and concepts
Frequently asked questions
When was QUEST DIAGNOSTICS INC founded?
Founded: 1967. The linked source provides the background record. [1]
Where is the headquarters of QUEST DIAGNOSTICS INC?
Headquarters location: Madison; Secaucus. The linked source provides the background record. [1]
Which business sectors are recorded for QUEST DIAGNOSTICS INC?
Business sectors: health care. The linked source provides the background record. [1]
Sources and review dates
- Wikidata — company background record (CC0) ↗
- Company identity and profile data ↗
- Wikipedia contributors — Quest Diagnostics (CC BY-SA 4.0) ↗
Reviewed 23 October 2026. Financial periods and historical event dates are shown separately. Figures reflect their stated source dates; this page is not a live quote or investment recommendation.