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Quest Diagnostics

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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

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Save 15%* on tick tests at questhealth.com

Summer is here, and so are the ticks. For when the bugs bite and something doesn’t feel right, test with Quest. Tick-related conditions like Lyme disease and Alpha-gal syndrome can fly under the radar. Get 15% off* Quest tick tests at questhealth.com through June 30 and know where your health stands. *Terms apply.
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DOWNLOAD THE MYQUEST APP

Save time with one simple step while managing your health and wellness

Life can become incredibly busy for all of us. Yet just one step can help you save precious time while managing both your health and overall wellness. 

Download and start using our MyQuest app today! Not only is it easy to use, but you can

 

  • Make, cancel, or reschedule lab appointments
  • Track your lab results over time to reveal any patterns
  • Pay your bills easily and securely

 

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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.

About us

Our company

Quest® is the brand name used for services offered by Quest Diagnostics Incorporated and its affiliated companies. Quest Diagnostics Incorporated and certain affiliates are CLIA-certified laboratories that provide HIPAA-covered services.  Other affiliates operated under the Quest® brand, such as Quest Consumer Inc., do not provide HIPAA-covered services. 

 

Quest®, Quest Diagnostics®, any associated logos, and all associated Quest Diagnostics registered or unregistered trademarks are the property of Quest Diagnostics. All third-party marks—® and ™—are the property of their respective owners. © 2025 Quest Diagnostics Incorporated. All rights reserved. Image content features models and is intended for illustrative purposes only.