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Quest Diagnostics

Lab Testing at Quest Diagnostics - Inside Gaithersburg Safeway Store - Employer Drug Testing Not Offered

Quest Diagnostics Patient Service Center in Gaithersburg, MD 20879.

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Address

20211 Goshen Rd Next To Pharmacy
Gaithersburg, MD 20879
Montgomery County

Hours

Monday7:00 AM – 12:00, 13:00
Tuesday7:00 AM – 12:00, 13:00
Wednesday7:00 AM – 12:00, 13:00
Thursday7:00 AM – 12:00, 13:00
Friday7:00 AM – 12:00, 13:00
Saturday8:00 AM – 1:00 PM
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.