Confidential results No doctor visit required Results in 1-3 days 4,500+ locations
Quest Diagnostics

Lab Testing at Quest Diagnostics - 4625 Southwest

Quest Diagnostics Patient Service Center in Houston, TX 77027.

Order Lab Tests for Collection at This Location

Browse All Tests

Popular tests at this location:

Address

4625 Southwest Freeway Site 142
Houston, TX 77027
Harris County

Hours

Monday8:00 AM – 5:30 PM
Tuesday8:00 AM – 5:30 PM
Wednesday8:00 AM – 5:30 PM
Thursday8:00 AM – 5:30 PM
Friday8:00 AM – 5:30 PM
SaturdayClosed
SundayClosed

Nearby alternatives

More lab options around Houston

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.