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Making a difference every single day

2,250+

convenient locations across the United States

50 million

tests performed each year for patients of all ages

3,500+

lab tests available to help you find answers

ALZHEIMER'S DISEASE RISK DETECTION

Detect Alzheimer's disease risk with a simple blood test

Get $100 off the AD-Detect Test for Alzheimer's Disease Risk. Offer available exclusively at questhealth.com through October 1, 2023. Terms apply.
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Post-COVID-19 Test Panels

Could it be long COVID?

Take an in-depth look at your symptoms to uncover if they are more likely due to a post-COVID-19 infection or another underlying health issue. Talk to your doctor or purchase a test panel from questhealth.com.
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The Latest From Quest

The Quest Diagnostics difference

Bringing together quality, speed, and technology to power advanced, affordable diagnostics for all. No trade-offs required.

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