| Business | Phone |
| American Recruiting Svc 6376 Spring Mountain Rd, Las Vegas 89146 | (702) 307-4277 |
| Test America 3377 Las Vegas Blvd S, Las Vegas 89109 | (702) 732-2733 |
| Cordova Enterprises Inc 2595 Chandler Ave 2, Las Vegas 89120 | (702) 732-4555 |
| Navarro Research & Engrg Nqs 1211 N Town Center Dr, Las Vegas 89144 | (702) 821-8450 |
| Medick James & Lee 2513 Red Arrow Dr, Las Vegas 89135 | (702) 341-8697 |
| Zack Research Group Las Vegas 89101 | (702) 383-6533 |
| Adiabatic Research Labs Ltd Las Vegas 89103 | (702) 252-3867 |
| Clinical Research Ctr-Nevada 600 S Rancho Dr, Las Vegas 89106 | (702) 731-4001 |
| Mrc Focus 101 Convention Center Dr 125, Las Vegas 89109 | (702) 734-7511 |
| Ergo Research Nevada Corp 2325 Renaissance Dr B, Las Vegas 89119 | (702) 967-2466 |
| Clinical Research Solutions 3718 Sesto Ct, Las Vegas 89141 | (702) 596-3633 |
| Aspen Research Inc Las Vegas 89146 | (702) 939-5309 |