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Our full-service clinical laboratory is located right inside the hospital and is staffed with certified medical technologists, skilled phlebotomists and other highly trained technicians who perform tests on blood, tissue samples and body fluids to aid your physician with a diagnosis.

In 2018, CTMC received The Joint Commission’s Gold Seal of Approval for Laboratory Services Accreditation by demonstrating continuous compliance with its performance standards. The Gold Seal of Approval is a symbol of quality that reflects an organization’s commitment to providing safe and effective patient care. 



doctor with microscope

To help achieve an accurate diagnosis and a faster recovery time for patients, board certified pathologists are available to consult with your physician and oversee the quality of services in the lab. Our outpatient services are open Monday - Thursday from 7 a.m. to 5:30 p.m. and on Friday from 7 a.m. to 5 p.m. After hours and weekend patients may check in at the registration desk next to the Emergency Department.

CTMC Lab Express

The same quality and expertise of CTMC's full-service clinical laboratory is also available on an outpatient basis in San Marcos at the new CTMC Lab Express. Routine blood draws, urine samples and cultures are all available at Lab Express. Service is fast, friendly and hassle-free - we require only a quick, minimal registration process and no up front payment at this location. (Fees for services and co-pays will be billed to the patient afterwards).

CTMC Lab Express is located at 1340 Wonder World Drive, Bldg. 2, on the first floor (in the Vista Complex across the street from CTMC in San Marcos).

San Marcos Location

1340 Wonder World Drive,  Bldg. 2 (first floor Vista Complex)
San Marcos, Tx 78666
Phone: 512-353-6440
Hours: M-F 7:30 a.m. - 5 p.m. (closed 12-1 p.m. for lunch)

Wimberley Location

201 FM 3237, Suite 110 (on the corner of Old Kyle Road and FM 3237)
Wimberley, TX 78676
Phone: 512-842-3675
Hours: M-F 7:30 a.m. - 4:00 p.m. (Closed 12-1 p.m. for lunch)

Contact Us

You can reach us at 512-753-3533.


Central Texas Medical Center
1301 Wonder World Drive
San Marcos, TX 78666