#1Health Outlook Corporation
Serves this area from Groton, CT (2 mi)
Clinical & Reference Laboratories in Groton, CT
The top-ranked clinical laboratories serving Groton, CT are Health Outlook Corporation, Pfizer Pharmacogenomics Lab and Quest Diagnostics LLC. We list 54 clinical laboratories serving Groton, 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 Groton, CT (Southeastern Connecticut Planning Region). 54 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 Groton
#2Pfizer Pharmacogenomics Lab
Serves this area from Groton, CT (3 mi)#3Quest Diagnostics LLC
Serves this area from New London, CT (4 mi)#4Quest Diagnostics LLC
Serves this area from Norwich, CT (12 mi)#5Quest Diagnostics
Serves this area from Norwich, CT (14 mi)#6East Side Clinical Laboratory, Inc
Serves this area from Norwich, CT (14 mi)#7Quest Diagnostics
Serves this area from Old Saybrook, CT (19 mi)#8Quest Diagnostics LLC
Serves this area from Windham, CT (28 mi)#9Dominion Diagnostics, LLC
Serves this area from North Kingstown, RI (35 mi)#10Hampton Pathology, PC
Serves this area from Southampton, NY (37 mi)
20 more providers serving this area
- Prime Pathology Laboratory, Southampton, NY (37 mi)
- Quest Diagnostics, LLC, Glastonbury, CT (39 mi)
- US Labs Connecticut, Middletown, CT (39 mi)
- Ct Gi Laboratory Powered By, Wethersfield, CT (40 mi)
- Laboratory Corporation Of America Holdings, Rocky Hill, CT (40 mi)
- Quest Diagnostics LLC, Wethersfield, CT (40 mi)
- Quest Diagnostics LLC, Manchester, CT (40 mi)
- Accu Reference Medical Lab, LLC, East Hartford, CT (42 mi)
- Obgyn Group Of Eastern Ct PC, South Windsor, CT (42 mi)
- Hartford Hospital Ancillary Laboratory, Newington, CT (43 mi)
- Quest Diagnostics LLC, Newington, CT (43 mi)
- Center For Advanced Reproductive Services, Hartford, CT (44 mi)
- Laboratory For Dna-guided Medicine, Hartford, CT (44 mi)
- Quest Diagnostics LLC, Hartford, CT (44 mi)
- Quest Diagnostics, New Britain, CT (45 mi)
- Starling Physicians PLLC, New Britain, CT (45 mi)
- Quest Diagnostics, Hartford, CT (45 mi)
- Quest Diagnostics, New Britain, CT (46 mi)
- Precision Toxicology, LLC, West Hartford, CT (46 mi)
- Quest Diagnostics LLC, West Hartford, CT (47 mi)
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Frequently asked questions
How many clinical laboratories serve Groton?
We list 54 clinical laboratories serving Groton, CT: 0 based there and 54 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 Groton?
The top-ranked clinical laboratories serving Groton, CT are Health Outlook Corporation, Pfizer Pharmacogenomics Lab, Quest Diagnostics LLC, Quest Diagnostics LLC and Quest Diagnostics. The full ranked list, with the official records each provider matched, is on this page.
Which clinical laboratories serving Groton are verified against official records?
10 of the top 10 match an active official record: Health Outlook Corporation (Centers for Medicare & Medicaid Services), Pfizer Pharmacogenomics Lab (Centers for Medicare & Medicaid Services), Quest Diagnostics LLC (Centers for Medicare & Medicaid Services), Quest Diagnostics LLC (Centers for Medicare & Medicaid Services) and Quest Diagnostics (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 .