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Quest Diagnostics

Lab Testing at Thumbs Up/Premier Uc San Marcos

Quest partner location in San Marcos, TX 78666.

Partner Location

This location is part of Quest's partner network. Services and availability may differ from a standard Quest Patient Service Center. Please call 512-648-6188 before visiting to confirm they accept your lab order.

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Note: tests available at this location depend on its services. Confirm by calling before visiting.

Address

1509 N Interstate 35
San Marcos, TX 78666
Hays County

Hours

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

Nearby alternatives

More lab options around San Marcos

About this location

Quest partner location. 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.