| Business | Phone |
| Quest Diagnotics 3020 Hamaker Ct 405, Fairfax 22031 | (703) 204-0798 |
| Cardiac Diagnostic Svc Of Va 8505 Arlington Blvd, Fairfax 22031 | (703) 641-0500 |
| Fairfax Medical Laboratory 10875 Main St 207, Fairfax 22030 | (703) 691-8366 |
| Fairfax Medical Laboratory 3027 Javier Rd, Fairfax 22031 | (703) 573-9553 |
| Fairfax Medical Laboratory 8303 Arlington Blvd, Fairfax 22031 | (703) 698-1510 |
| Fairfax Medical Labs 3700 Joseph Siewick Dr 302, Fairfax 22033 | (703) 262-0535 |
| First Class Sleep Diagnostic 3911 Old Lee Hwy 42b, Fairfax 22030 | (703) 385-9222 |
| Laboratory Corp Of America 4001 Fair Ridge Dr 104, Fairfax 22033 | (703) 385-5586 |
| Laboratory Corp Of America 8503 Arlington Blvd # 350, Fairfax 22031 | (703) 573-6298 |
| Quest Diagnotics 10400 Eaton Pl, Fairfax 22030 | (703) 267-5729 |
| Quest Diagnostics 11150 Main St, Fairfax 22030 | (703) 691-2218 |
| Quest Diagnotics 10721 Main St, Fairfax 22030 | (703) 359-6257 |
| Quest Diagnostics 8501 Arlington Blvd 120, Fairfax 22031 | (703) 205-9686 |