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Holiday schedule

Quest Diagnostics Patient Service Centers will have modified hours during the holiday season.

  • Closing early at 12:00pm on December 31, 2025
  • Closed on January 1, 2026


Have a healthy, happy holiday!

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Quest Diagnostics

More therapeutic areas

Therapeutic area expertise

We help clients with drug development in all major therapeutic areas. Over the years, we’ve built up a world class team with knowledge and expertise in the following areas:

Cell & gene therapy
Rare disease
Oncology
Immuno-oncology
Neurology
Cardio-metabolic
Autoimmunine diseases
Gastrointestinal disorders
Infectious disease
Women's health

View all therapeutic areas

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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.