Quest Diagnostics
Quest Diagnostics is a leading provider of diagnostic information services, offering a comprehensive menu of laboratory testing and clinical insights to empower healthcare decisions. The company leverages one of the world's largest databases of clinical lab results to serve approximately half of the physicians and hospitals in the United States. Its core value proposition centers on improving health outcomes through innovative, convenient, and affordable diagnostic services across the healthcare ecosystem.
Financials
Based on Q1 2026 filing
Revenue
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Diagnostic Information Services
primaryThe primary business unit focused on developing and delivering diagnostic insights from laboratory testing. It provides routine, non-routine, and advanced clinical testing, including anatomic pathology and molecular genomics.
Advanced Diagnostics™, MyQuest®, QuestHealth.com, Quest AD-Detect®, Haystack Oncology MRD test, Autoimmune ANAlyzeR™, Quest® Lab Stewardship™, Quest Clinical Trials Connect™, Blueprint for Wellness®
Physicians, Hospitals, Patients, Health Plans, Employers, Pharmaceutical Companies
Diagnostic Solutions
minorA specialized group offering risk assessment services for the life insurance industry and healthcare information technology solutions for providers and payers.
ExamOne®, Quanum® Enterprise Content Solutions™, Quanum®
Life Insurance Companies, Hospitals, Physician Practices
Segment Financials
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Competitive Position
A leading national provider of diagnostic information services with significant scale, serving approximately one-third of the U.S. adult population annually.
Geographies
United States, Canada, Puerto Rico
Customer Segments
Healthcare Providers, Insurance Carriers, Enterprise Employers, Individual Consumers
Upstream Dependencies
Laboratory equipment manufacturers, Reagent and chemical suppliers, IT infrastructure and software licensors, Logistics and fuel providers
Downstream Customers
Physicians and specialists, Hospital systems, Health insurance plans, Government healthcare programs (Medicare/Medicaid), Direct-to-consumer patients, Life insurance underwriters
Competitors & Partners
Competitors
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Partners
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Subsidiaries
LifeLabs
Canadian laboratory diagnostic information provider acquired in 2024.
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Cancer testing company specializing in minimal residual disease detection.
Spectra Laboratories
Renal-specific laboratory testing assets acquired from Fresenius Medical Care.
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Quest Diagnostics FAQ
Common questions about Quest Diagnostics
Quest Diagnostics is a leading provider of diagnostic information services, offering a comprehensive menu of laboratory testing and clinical insights to empower healthcare decisions. The company leverages one of the world's largest databases of clinical lab results to serve approximately half of the physicians and hospitals in the United States. Its core value proposition centers on improving health outcomes through innovative, convenient, and affordable diagnostic services across the healthcare ecosystem.
Quest Diagnostics (DGX) has a market capitalization of $21.0B and trades on NYSE.
Quest Diagnostics generated $11.3B in trailing twelve-month revenue with net income of $1.0B, representing a net margin of 9.1%. Gross margin stands at 33.2%, with free cash flow of $1.3B. These figures are based on the Q1 2026 filing.
Quest Diagnostics's key competitors include Laboratory Corporation of America Holdings, Natera, Inc. Common Stock, Agilent Technologies Inc., and others. These companies compete in similar markets and product categories.
Quest Diagnostics has approximately 48,000 employees.