| Business | Phone |
| Bio Aquatic Testing 2501 Mayes Rd 100, Carrollton 75006 | (972) 242-7750 |
| Precilab 3330 Earhart Dr, Carrollton 75006 | (972) 661-8160 |
| Stephens & Assoc 3310 Keller Springs Rd 130, Carrollton 75006 | (972) 392-1529 |
| Weckerling Scientific Labs 1611 N Interstate 35e, Carrollton 75006 | (972) 446-0669 |