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Quest Diagnostics
DGX · NYSEDiagnostics & Research
The economic chain
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Raw inputs
Equipment
Foundry
Chip design
Software
AI demand
—
Company details
Market cap
~$21B
P/E ratio
~21×
Div yield
~1.8%
Revenue (2025)
$11.0B
Rev. growth
+12%
Net income
~$1.0B
Profit margin
~9%
2026 rev guide
~$11.8B
In plain English
Quest Diagnostics runs the largest commercial network of medical laboratories in the United States. When your doctor orders a blood test, the tube is often shipped to a Quest lab, run on analysers built by Roche, Abbott and Siemens, and the result billed back through your health plan. It is the reference lab the rest of the health system leans on for the tests hospitals and clinics do not run in-house — and it has been buying up regional and hospital lab businesses (LifeLabs in Canada, Allina, PathAI) to grow.
In simple terms
What Quest Diagnostics really sells
Quest Diagnostics runs the largest commercial network of medical laboratories in the United States. When your doctor orders a blood test, the tube is often shipped to a Quest lab, run on analysers built by Roche, Abbott and Siemens, and the result billed back through your health plan. It is the reference lab the rest of the health system leans on for the tests hospitals and clinics do not run in-house — and it has been buying up regional and hospital lab businesses (LifeLabs in Canada, Allina, PathAI) to grow.
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Risk read
SteadierMore speculative
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