#1B&b Bio LLC
Based in Gaithersburg, MD
Clinical & Reference Laboratories in Gaithersburg, MD
The top-ranked clinical laboratories serving Gaithersburg, MD are B&b Bio LLC, Cleardx Clinical Laboratory and Clongen Laboratories. We list 80 clinical laboratories serving Gaithersburg, MD. 30 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 Gaithersburg, MD (Montgomery County). 80 providers, 10 of the top 10 verified against federal or state records. Registry records checked on 2026-11-04.
Top 10 ranked clinical laboratories for Gaithersburg
#2Cleardx Clinical Laboratory
Based in Gaithersburg, MD#3Clongen Laboratories
Based in Gaithersburg, MD#4Cv Path Institute Inc
Based in Gaithersburg, MD#5Genedx, LLC
Based in Gaithersburg, MD#6Oral Pathology Services
Based in Gaithersburg, MD#7Smithers Pharmaceutical Development Services
Based in Gaithersburg, MD#8Sam's Medical Laboratory LLC
Serves this area from Montgomery Village, MD (2 mi)#9Genesys Biolabs
Serves this area from MD#10Minomic Inc
Serves this area from MD
20 more providers serving this area
- Cirrus Dx Inc, Rockville, MD (3 mi)
- Oncoomicsdx, Rockville, MD (3 mi)
- Psomagen Inc, Rockville, MD (3 mi)
- Arthritis & Rheumatism Associate PC, Rockville, MD (3 mi)
- Shady Grove Andrology Center LLC, MD
- Trilliumbio, MD
- Personalized Medicine Care Diagnostic, Germantown, MD (4 mi)
- Cosmosid Ngs Laboratory Services, LLC, Germantown, MD (4 mi)
- Nih Intramural Sequencing Center, North Bethesda, MD (7 mi)
- Neurodiagnostics, Inc, DBA Synaps Dx, North Bethesda, MD (7 mi)
- Lo Biosciences, North Bethesda, MD (8 mi)
- C W Bill Young Marrow Dnr Rcrtmnt & Research Prog, North Bethesda, MD (8 mi)
- Kaiser Permanente Rockville Regional Lab, North Bethesda, MD (8 mi)
- Capitol Dermatopathology LLC, Potomac, MD (10 mi)
- Medbio Reference Laboratories, Inc, Wheaton, MD (11 mi)
- Virant Diagnostics Inc, Wheaton, MD (11 mi)
- Laboratory Of Parasitic Diseases, Bethesda, MD (11 mi)
- Immunopathogenesis Section, Bethesda, MD (11 mi)
- Inflammatory Disease Section, Nhgri, Bethesda, MD (11 mi)
- Mid Atlantic Pathology Services, Mclean Satellite, McLean, VA (14 mi)
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Frequently asked questions
How many clinical laboratories serve Gaithersburg?
We list 80 clinical laboratories serving Gaithersburg, MD: 7 based there and 73 serving it from nearby. 10 of the top 10 match an active federal or state record, checked on 2026-11-04.
Which clinical laboratories serve Gaithersburg?
The top-ranked clinical laboratories serving Gaithersburg, MD are B&b Bio LLC, Cleardx Clinical Laboratory, Clongen Laboratories, Cv Path Institute Inc and Genedx, LLC. The full ranked list, with the official records each provider matched, is on this page.
Which clinical laboratories serving Gaithersburg are verified against official records?
10 of the top 10 match an active official record: B&b Bio LLC (Centers for Medicare & Medicaid Services), Cleardx Clinical Laboratory (Centers for Medicare & Medicaid Services), Clongen Laboratories (Centers for Medicare & Medicaid Services), Cv Path Institute Inc (Centers for Medicare & Medicaid Services) and Genedx, LLC (Centers for Medicare & Medicaid Services), and 5 more on this page. 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 .