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Quest Diagnostics

Lab Testing at Quest Diagnostics - Brooklyn Ralph Avenue

Quest Diagnostics Patient Service Center in Brooklyn, NY 11234.

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Address

2035 Ralph Ave Ste B1
Brooklyn, NY 11234
Kings County

Hours

Monday7:00 AM – 5:00 PM
Tuesday7:00 AM – 5:00 PM
Wednesday7:00 AM – 5:00 PM
Thursday7:00 AM – 5:00 PM
Friday7:00 AM – 5:00 PM
Saturday7:00 AM – 4:00 PM
Sunday8:00 AM – 1:00 PM

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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.