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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

UNDERSTAND GENETIC HEALTH

Not all genetic health tests are created equal.

Genetic Insights uses advanced next-generation sequencing technology to analyze DNA. Now available for purchase at questhealth.com.
DNA Double helix in green

PRIORITIZE THEIR COGNITIVE HEALTH

Know their risk for Alzheimer's disease

Encourage your loved ones to detect Alzheimer's disease risk early with a simple blood test. The AD-Detect Test for Alzheimer's Disease Risk is now available for purchase at 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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