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Holiday schedule

Our Patient Service Centers will be closed on Friday, July 4, 2025 in observance of the Fourth of July holiday.  Have a healthy, happy holiday.

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Quest Diagnostics

Phoenix Laboratory Facility

424 S 56Th St

Ste 100

Phoenix

85034

AZ

United States

33.4426313

-111.9620619

(800) 766-6721

Monday: 8:00 to 5:00

Tuesday: 8:00 to 5:00

Wednesday: 8:00 to 5:00

Thursday: 8:00 to 5:00

Friday: 8:00 to 5:00

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.