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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 24, 2025
  • Closed on December 25, 2025
  • 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

Seattle, WA licensure

Quest Diagnostics Clinical Laboratories Inc.
1737 Airport Way S Ste 200, Seattle, WA 98134

Licenses Expires License/Permit #
CAP 
 07-15-27 2465601
California 10-27-24 CDS-90001906
Washington 06-30-27 MTSA-00003261

The state license for laboratories within Washington are in lieu of a CLIA certificate.

 

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.