#1Clinical Diagnostic Laboratories, LLC
Serves this area from Ashburn, VA (27 mi)
Clinical & Reference Laboratories in Jefferson County, WV
The top-ranked clinical laboratories serving Jefferson County, WV are Clinical Diagnostic Laboratories, LLC, Labcorp Ashburn Psc and Athari Biosciences Inc. We list 3 clinical laboratories serving Jefferson County, WV. 3 of the providers shown match an active record from Centers for Medicare & Medicaid Services, checked on the date shown. Rankings follow our published methodology; sponsored placements never change rank.
Clinical & Reference Laboratories serving Jefferson County, WV. 3 providers, 3 of the top 3 verified against federal or state records. Registry records checked on 2026-11-04.
Top 3 ranked clinical laboratories for Jefferson County
| # | Provider | Verified records | Based in | Phone |
|---|---|---|---|---|
| 1 | Clinical Diagnostic Laboratories, LLC | CLIA-certified laboratory (certificate of compliance or accreditation, CMS)#49D2150302 | Ashburn, VA (27 mi) | (703) 291-6694 |
| 2 | Labcorp Ashburn Psc | CLIA-certified laboratory (certificate of compliance or accreditation, CMS)#49D2303441 | Ashburn, VA (29 mi) | (703) 729-6830 |
| 3 | Athari Biosciences Inc | CLIA-certified laboratory (certificate of compliance or accreditation, CMS)#49D2244393 | Dulles Town Center, VA (31 mi) | (703) 444-8000 |
#2Labcorp Ashburn Psc
Serves this area from Ashburn, VA (29 mi)#3Athari Biosciences Inc
Serves this area from Dulles Town Center, VA (31 mi)
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Frequently asked questions
How many clinical laboratories serve Jefferson County?
We list 3 clinical laboratories serving Jefferson County, WV: 0 based there and 3 serving it from nearby. 3 of the top 3 match an active federal or state record, checked on 2026-11-04.
Which clinical laboratories serve Jefferson County?
The top-ranked clinical laboratories serving Jefferson County, WV are Clinical Diagnostic Laboratories, LLC, Labcorp Ashburn Psc and Athari Biosciences Inc. The full ranked list, with the official records each provider matched, is on this page.
Which clinical laboratories serving Jefferson County are verified against official records?
3 of the top 3 match an active official record: Clinical Diagnostic Laboratories, LLC (Centers for Medicare & Medicaid Services), Labcorp Ashburn Psc (Centers for Medicare & Medicaid Services) and Athari Biosciences Inc (Centers for Medicare & Medicaid Services). Each badge links to the official record it matched.
How are these companies ranked?
By our published methodology: verified registrations, documented capabilities, years registered and responsiveness. Sponsored placements are shown separately and never affect rank.
What does "Verified" mean on this page?
"Verified" means we matched the provider to an active official record on the date shown; each badge links to that record. The absence of a badge only means we have not verified that item.
What does CLIA certification mean?
CLIA certificates are issued under federal law for laboratories testing human specimens. A certificate of compliance or accreditation covers moderate and high complexity testing; a certificate of waiver covers only simple waived tests.
"Verified" means we matched the provider to an active official record on the date shown. The absence of a badge only means we have not verified that item. How we rank and verify. Page updated .
Communities served
Charles Town, Ranson, Shannondale, Shepherdstown, Bolivar, Shenandoah Junction, Middleway, Harpers Ferry