#1Quest Diagnostics LLC
Based in West Haven, CT
Clinical & Reference Laboratories in West Haven, CT
The top-ranked clinical laboratories serving West Haven, CT are Quest Diagnostics LLC, Smilow - Orange and Diamir. We list 81 clinical laboratories serving West Haven, CT. 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 West Haven, CT (South Central Connecticut Planning Region). 81 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 West Haven
#2Smilow - Orange
Serves this area from Orange, CT (2 mi)#3Diamir
Serves this area from New Haven, CT (3 mi)#4Pfizer New Haven Cru Safety Laboratory
Serves this area from New Haven, CT (3 mi)#5Vo Health, Inc
Serves this area from New Haven, CT (3 mi)#6Yale Dermatopathology Laboratory
Serves this area from New Haven, CT (3 mi)#7Precipio Inc
Serves this area from New Haven, CT (4 mi)#8Dianon Systems Inc
Serves this area from Woodbridge, CT (5 mi)#9Laboratory Corporation Of America Holdings
Serves this area from East Haven, CT (5 mi)#10Quest Diagnostics LLC
Serves this area from Milford city (balance), CT (6 mi)
20 more providers serving this area
- Milford Molecular Diagnostics, LLC, Milford city (balance), CT (6 mi)
- Dianon Systems Inc, Shelton, CT (7 mi)
- Esoterix Genetic Laboratories, LLC, Shelton, CT (7 mi)
- Quest Diagnostics LLC, Derby, CT (8 mi)
- Smilow - Derby, Derby, CT (8 mi)
- Northeast Bioanalytical Laboratories LLC, Hamden, CT (8 mi)
- Quest Diagnostics LLC, Hamden, CT (8 mi)
- Ameripath New York, LLC, Shelton, CT (9 mi)
- Yale Dermatology-branford, Branford, CT (9 mi)
- Progressive Diagnostics, LLC, Trumbull, CT (10 mi)
- Genco Labs LLC, Branford, CT (11 mi)
- Wren Laboratories, LLC, Branford, CT (11 mi)
- Quest Diagnostics LLC, Stratford, CT (12 mi)
- Quest Diagnostics LLC, Bridgeport, CT (13 mi)
- Molecular Diagnostic Laboratory LLC, Wallingford, CT (16 mi)
- Quest Diagnostics LLC, Cheshire, CT (16 mi)
- Advanced Genetics Lab, Monroe, CT (16 mi)
- Quest Diagnostics, Wallingford, CT (17 mi)
- Quest Diagnostics, LLC, Wallingford, CT (17 mi)
- Quest Diagnostics LLC, Prospect, CT (18 mi)
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Frequently asked questions
How many clinical laboratories serve West Haven?
We list 81 clinical laboratories serving West Haven, CT: 1 based there and 80 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 West Haven?
The top-ranked clinical laboratories serving West Haven, CT are Quest Diagnostics LLC, Smilow - Orange, Diamir, Pfizer New Haven Cru Safety Laboratory and Vo Health, Inc. The full ranked list, with the official records each provider matched, is on this page.
Which clinical laboratories serving West Haven are verified against official records?
10 of the top 10 match an active official record: Quest Diagnostics LLC (Centers for Medicare & Medicaid Services), Smilow - Orange (Centers for Medicare & Medicaid Services), Diamir (Centers for Medicare & Medicaid Services), Pfizer New Haven Cru Safety Laboratory (Centers for Medicare & Medicaid Services) and Vo Health, Inc (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 .