| Business | Phone |
| All-Trials Clinical Research 3010 Maplewood Ave # 106, Winston Salem 27103 | (336) 659-1500 |
| Autrec 2025 Frontis Plaza Blvd, Winston Salem 27103 | (336) 794-3131 |
| Carolina Clinical Research Inc 2990 Bethesda Pl # 606b, Winston Salem 27103 | (336) 765-9467 |
| Clinical Research Of Winston 3010 Maplewood Ave # 122, Winston Salem 27103 | (336) 794-3273 |
| Clinical Research-Winston 3333 Brookview Hills Blvd, Winston Salem 27103 | (336) 245-0617 |
| Targacept 200 E 1st St # 300, Winston Salem 27101 | (336) 480-2100 |
| Salem Research Group 150 Kimel Park Dr # 200, Winston Salem 27103 | (336) 760-3909 |
| Ctms Inc 1399 Ashleybrook Ln # 100, Winston Salem 27103 | (336) 774-8511 |
| Lbi Research Llc 301 N Main St, Winston Salem 27101 | (336) 726-2005 |