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Holiday schedule

Our Patient Service Centers will be closed on Monday, May 26, 2025 for the Memorial Day Holiday. Have a healthy, happy holiday.

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Quest Diagnostics

Horsham Laboratory Facility

900 Business Center Drive

Horsham

19044

PA

United States

40.1680643

-75.1528412

(866) 697-8378

Monday: 7:00 to 3:30

Tuesday: 7:00 to 3:30

Wednesday: 7:00 to 3:30

Thursday: 7:00 to 3:30

Friday: 7:00 to 3:30

Saturday: 7:00 to 3:00

Sunday: CLOSED

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.