Quest Diagnostics

Lab Testing at Quest Diagnostics - 4625 Southwest

Quest Diagnostics Patient Service Center in Houston, TX 77027.

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Popular tests at this location:

TSH Lipid Panel CBC A1C Testosterone Vitamin D CMP

Address

4625 Southwest Freeway Site 142
Houston, TX 77027
Harris County

346-887-6363

Hours

Monday	8:00 AM – 5:30 PM
Tuesday	8:00 AM – 5:30 PM
Wednesday	8:00 AM – 5:30 PM
Thursday	8:00 AM – 5:30 PM
Friday	8:00 AM – 5:30 PM
Saturday	Closed
Sunday	Closed

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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.