| Business | Phone |
| Southwest Environmental 11302a Tanner Rd, Houston 77041 | (281) 363-4777 |
| Aim Laboratory 1720 Federal Rd, Houston 77015 | (713) 451-5670 |
| Audiology Lab & Hearing Aid 902 Frostwood Dr 303, Houston 77024 | (713) 932-3619 |
| Biomat Usa Inc 8537 Gulf Fwy B, Houston 77017 | (713) 943-8828 |
| Choice Lab 2707 N Shepherd Dr, Houston 77008 | (713) 861-9177 |
| Cis-Tsuhisd Lab 3805 Burkett St, Houston 77004 | (713) 440-9520 |
| Cryo-Optics 6545 Rutgers Ave, Houston 77005 | (713) 667-2721 |
| Cryogene Lab 9300 Kirby Dr, Houston 77054 | (713) 664-1600 |
| Dynatech Laboratories 11304 Cullen Blvd, Houston 77047 | (713) 733-0805 |
| Energistics Laboratory 4633 Winfield Rd, Houston 77039 | (281) 590-1902 |
| Max Labs 9189 Winkler Dr A, Houston 77017 | (713) 586-5555 |
| Texas Dental Technology School 7442 Park Place Blvd, Houston 77087 | (713) 645-1612 |
| Hager Laboratory Svc 2217 W 34th St, Houston 77018 | (713) 956-6689 |
| Lab Acceptance Inc 723 Main St, Houston 77002 | (713) 225-2369 |
| J & J Orthodontic Laboratory Po Box 710910, Houston 77271 | (713) 777-1782 |
| National Health Labs 1120 Nasa Rd 1, Houston 77058 | (281) 335-0877 |
| National Health Labs 18100 Saint John Dr, Houston 77058 | (281) 333-0420 |
| Nisu Laboratories 1918 Winter Knoll Way, Houston 77062 | (713) 320-9344 |