| Business | Phone |
| Quest Diagnostics Inc 265 Mill St # 700, Hagerstown 21740 | (301) 665-1935 |
| Hagerstown Medical Laboratory 11110 Medical Campus Rd # 230, Hagerstown 21742 | (301) 665-4900 |
| Hagerstown Medical Laboratory 332 Mill St, Hagerstown 21740 | (301) 739-3934 |
| Laboratory Corp Of America 338 Mill St, Hagerstown 21740 | (301) 791-2428 |