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Quest Diagnostics

Lab Testing at Quest Diagnostics - King Of Prussia

Quest Diagnostics Patient Service Center in King Of Prussia, PA 19406.

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Address

491 Allendale Rd Ste 111
King Of Prussia, PA 19406
Montgomery County

Hours

Monday6:30 AM – 3:00 PM
Tuesday6:30 AM – 3:00 PM
Wednesday6:30 AM – 3:00 PM
Thursday6:30 AM – 3:00 PM
Friday6:30 AM – 3:00 PM
SaturdayClosed
SundayClosed

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About this location

Quest Diagnostics Patient Service Center. Quest Diagnostics operates one of the largest networks of clinical laboratories in the United States, offering a wide range of diagnostic tests for patients, physicians, and employers.

Listing last updated 2026-04-25.