| Business | Phone |
| Piedmont Medical Lab Inc 311 Medical Ct, Martinsburg 25401 | (304) 264-0600 |
| Piedmont Medical Laboratory 2000 Foundation Way, Martinsburg 25401 | (304) 263-0641 |
| Piedmont Medical Laboratory 283 Rock Cliff Dr A, Martinsburg 25401 | (304) 264-0185 |
| Laboratory Corp Of America 315 Rock Cliff Dr, Martinsburg 25401 | (304) 262-0167 |