| Business | Phone |
| Aurora Medical Systems Inc 2030 G Ave 1102, Plano 75074 | (972) 633-1777 |
| Portamedic 3900 American Dr, Plano 75075 | (214) 995-2497 |
| Sur-Scan 2030 Avenue G 1102, Plano 75074 | (972) 633-1388 |
| Alliance Drug Testing Svc 2600 K Ave 224, Plano 75074 | (972) 578-5959 |