| Business | Phone |
| Diagnostic Marketing Assoc Po Box 281, Huntingdon Valley 19006 | (215) 517-5501 |
| Informed Diagnostics 2600 Philmont Ave # 118, Huntingdon Valley 19006 | (215) 947-5508 |
| J C Blair Medical Laboratories 1225 Warm Springs Ave, Huntingdon Valley 16652 | (814) 643-8632 |