| Business | Phone |
| Smith Kline Beechem 1222 Yukon Dr, St Louis 63137 | (314) 868-9980 |
| R-J Technology Inc 3915 Watson Rd, St Louis 63109 | (314) 647-4327 |
| Quest Diagnostics Inc 2320 Schuetz Rd, St Louis 63146 | (314) 991-1311 |
| Laboratory Corp Of America 11971 Borman Dr, St Louis 63146 | (314) 434-4193 |
| Centralwest Clinical Research 100 N Euclid Ave, St Louis 63108 | (314) 454-1931 |
| Biotech Laboratories 12509 Village Circle Dr, St Louis 63127 | (314) 842-9203 |
| Clinical Research 1040 N Mason Rd, St Louis 63141 | (314) 439-1136 |