| Business | Phone |
| Petroleum Laboratories Inc 333 E Kaliste Saloom Rd, Lafayette 70508 | (337) 234-7414 |
| Cda & Assoc Inc 1472 S College Rd, Lafayette 70503 | (337) 237-2342 |
| Enviro-Lab Inc Lafayette 70501 | (337) 234-2283 |
| Labs 600 Loire Ave, Lafayette 70507 | (337) 896-7749 |
| Lafayette Paleo Labs 111 Pine Park Dr, Lafayette 70508 | (337) 264-1782 |
| Sherry Laboratories Inc 2417 W Pinhook Rd, Lafayette 70508 | (337) 235-0483 |