#1Quest Diagnostics LLC
Serves this area from Bridgeport, CT (4 mi)
Clinical & Reference Laboratories in Fairfield, CT
The top-ranked clinical laboratories serving Fairfield, CT are Quest Diagnostics LLC, Rejuvenating Fertility Center and Quest Diagnostics LLC. We list 59 clinical laboratories serving Fairfield, 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 Fairfield, CT (Greater Bridgeport Planning Region). 59 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 Fairfield
#2Rejuvenating Fertility Center
Serves this area from Westport, CT (5 mi)#3Quest Diagnostics LLC
Serves this area from Stratford, CT (6 mi)#4Progressive Diagnostics, LLC
Serves this area from Trumbull, CT (8 mi)#5Gary A Letts, Md, LLC
Serves this area from Norwalk, CT (8 mi)#6Quest Diagnostics LLC
Serves this area from Norwalk, CT (9 mi)#7Ameripath New York, LLC
Serves this area from Shelton, CT (9 mi)#8Milford Molecular Diagnostics, LLC
Serves this area from Milford city (balance), CT (11 mi)#9Quest Diagnostics LLC
Serves this area from Milford city (balance), CT (11 mi)#10Dianon Systems Inc
Serves this area from Shelton, CT (11 mi)
20 more providers serving this area
- Esoterix Genetic Laboratories, LLC, Shelton, CT (11 mi)
- Advanced Genetics Lab, Monroe, CT (12 mi)
- Quest Diagnostics LLC, Derby, CT (15 mi)
- Smilow - Derby, Derby, CT (15 mi)
- Smilow - Orange, Orange, CT (15 mi)
- Laboratory Corporation Of America Holdings, Stamford, CT (16 mi)
- Quest Diagnostics LLC, Stamford, CT (16 mi)
- Dianon Systems Inc, Woodbridge, CT (17 mi)
- Quest Diagnostics LLC, West Haven, CT (18 mi)
- Quest Diagnostics, Danbury, CT (18 mi)
- Advanced Dermcare PC, Danbury, CT (19 mi)
- Stony Brook Pathologists Ufpc Laboratory, Stony Brook University, NY (19 mi)
- Cytogenx Corp, Stony Brook, NY (19 mi)
- Pfizer New Haven Cru Safety Laboratory, New Haven, CT (20 mi)
- Diamir, New Haven, CT (20 mi)
- Vo Health, Inc, New Haven, CT (20 mi)
- Yale Dermatopathology Laboratory, New Haven, CT (20 mi)
- Applied Dna Clinical Labs, LLC, Stony Brook University, NY (20 mi)
- Precipio Inc, New Haven, CT (21 mi)
- Quest Diagnostics, Southbury, CT (21 mi)
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Frequently asked questions
How many clinical laboratories serve Fairfield?
We list 59 clinical laboratories serving Fairfield, CT: 0 based there and 59 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 Fairfield?
The top-ranked clinical laboratories serving Fairfield, CT are Quest Diagnostics LLC, Rejuvenating Fertility Center, Quest Diagnostics LLC, Progressive Diagnostics, LLC and Gary A Letts, Md, LLC. The full ranked list, with the official records each provider matched, is on this page.
Which clinical laboratories serving Fairfield are verified against official records?
10 of the top 10 match an active official record: Quest Diagnostics LLC (Centers for Medicare & Medicaid Services), Rejuvenating Fertility Center (Centers for Medicare & Medicaid Services), Quest Diagnostics LLC (Centers for Medicare & Medicaid Services), Progressive Diagnostics, LLC (Centers for Medicare & Medicaid Services) and Gary A Letts, Md, 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 .