| Business | Phone |
| Clinical Pathology Lab 7200 Wyoming Spgs # 100, Round Rock 78681 | (512) 873-1600 |
| Mayo Medical Laboratories 4 Meadow Way, Round Rock 78664 | (512) 828-4428 |
| Central Texas Dna Testing 1212 Chisholm Trl, Round Rock 78681 | (512) 388-4022 |
| Quest Diagnostics 1 Chisholm Trl 320, Round Rock 78681 | (512) 341-9264 |