| Business | Phone |
| Stress Alternative 2073 Geddes Rd, Rockford 61103 | (815) 877-4128 |
| Redwood Toxicology Lab 1505 N Alpine Rd, Rockford 61107 | (815) 399-2591 |
| Research Frontiers Inc 1704 N Mulford Rd, Rockford 61107 | (815) 877-3800 |
| Quest Diagnotics 5701 Strathmoor Dr 5, Rockford 61107 | (815) 229-6698 |
| Qwest Diagnostics Inc 5701 Strathmoor Dr, Rockford 61107 | (815) 229-5163 |
| Imaging & Diagnostics Ctr 1639 N Alpine Rd 380, Rockford 61107 | (815) 231-7036 |
| Quest Diagnotics 2350 N Rockton Ave, Rockford 61103 | (815) 962-1939 |
| Quest Diagnostic 5727 Strathmoor Dr, Rockford 61107 | (815) 229-5706 |