| Business | Phone |
| Associated Laboratories 3323 Rudy St, Knoxville 37921 | (865) 524-3563 |
| Bcn Research Laboratories 4009 Henson Rd, Knoxville 37921 | (865) 558-6819 |
| Test America 717 Valley Dale Rd, Knoxville 37923 | (865) 690-1256 |
| Southeastern Testing Inc 9516 Bluegrass Rd, Knoxville 37922 | (865) 690-7750 |
| Southern Testing Svc Inc 10627 Lexington Dr, Knoxville 37932 | (865) 966-5330 |
| Star Lab Inc 2121 Dutch Valley Dr, Knoxville 37918 | (865) 689-3101 |
| Construction Materials Lab 2204 Atchley St, Knoxville 37920 | (865) 573-6122 |
| Construction Testing Inc 127 Perimeter Park Rd # G, Knoxville 37922 | (865) 693-1166 |
| S-W Laboratories Inc 919 Murray Dr, Knoxville 37912 | (865) 687-4872 |
| Galbraith Laboratories Inc 2323 Sycamore Dr, Knoxville 37921 | (865) 546-1335 |
| General Engineering Labs Knoxville 37923 | (865) 470-4090 |
| Global Testing Laboratories 7201 Strawberry Plains Pike, Knoxville 37914 | (865) 523-9972 |