| Business | Phone |
| Basic Laboratory 2218 Railroad Ave, Redding 96001 | (530) 243-7234 |
| Columbia Analytical Svc 5090 Caterpillar Rd, Redding 96003 | (530) 244-5227 |
| Redding Pathologists Lab 1770 Churn Creek Rd, Redding 96002 | (530) 247-8265 |
| Shasta Analytical Laboratory 20280 Skypark Dr, Redding 96002 | (530) 226-5400 |