| Business | Phone |
| Biomedical Enterprises Inc Bethesda 20817 | (301) 469-5112 |
| Precision Imaging Pet Dgnstcs 4416 E West Hwy, Bethesda 20814 | (301) 656-7226 |
| Fairfax Medical Laboratories 10215 Fernwood Rd, Bethesda 20817 | (301) 897-5728 |
| Onco Diagnostic Systems Inc 10401 Old Georgetown Rd # 206, Bethesda 20814 | (301) 530-5511 |