#1Saint Mary's Hospital Oncology Center
Based in Waterbury, CT
Clinical & Reference Laboratories in Waterbury, CT
The top-ranked clinical laboratories serving Waterbury, CT are Saint Mary's Hospital Oncology Center, Smilow - Waterbury and Sunrise Medical Laboratories. We list 74 clinical laboratories serving Waterbury, 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 Waterbury, CT (Naugatuck Valley Planning Region). 74 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 Waterbury
#2Smilow - Waterbury
Based in Waterbury, CT#3Sunrise Medical Laboratories
Based in Waterbury, CT#4Quest Diagnostics LLC
Serves this area from Prospect, CT (3 mi)#5Quest Diagnostics LLC
Serves this area from Cheshire, CT (8 mi)#6Laboratory Corporation Of America Holdings
Serves this area from Southington, CT (8 mi)#7Quest Diagnostics LLC
Serves this area from Southington, CT (10 mi)#8Quest Diagnostics
Serves this area from Southbury, CT (11 mi)#9Dermatopathology Laboratory Of New England PC
Serves this area from Meriden, CT (13 mi)#10Quest Diagnostics
Serves this area from Wallingford, CT (13 mi)
20 more providers serving this area
- Quest Diagnostics, LLC, Wallingford, CT (14 mi)
- Molecular Diagnostic Laboratory LLC, Wallingford, CT (14 mi)
- Quest Diagnostics LLC, Hamden, CT (14 mi)
- Northeast Bioanalytical Laboratories LLC, Hamden, CT (14 mi)
- Starling Physicians PLLC, New Britain, CT (15 mi)
- Connecticut Imaging Partners, Farmington, CT (15 mi)
- Jackson Laboratory For Genomic Medicine, The, Farmington, CT (15 mi)
- Quest Diagnostics, New Britain, CT (15 mi)
- Smilow - Derby, Derby, CT (16 mi)
- Dianon Systems Inc, Woodbridge, CT (16 mi)
- Quest Diagnostics, New Britain, CT (16 mi)
- Quest Diagnostics LLC, Derby, CT (16 mi)
- Cars-farmington, Farmington, CT (16 mi)
- Quest Diagnostics LLC, Farmington, CT (16 mi)
- Precipio Inc, New Haven, CT (18 mi)
- Pfizer New Haven Cru Safety Laboratory, New Haven, CT (18 mi)
- Quest Diagnostics LLC, Torrington, CT (18 mi)
- Yale Dermatopathology Laboratory, New Haven, CT (18 mi)
- Vo Health, Inc, New Haven, CT (18 mi)
- Ecpc-c Wallace Home, Avon, CT (19 mi)
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Frequently asked questions
How many clinical laboratories serve Waterbury?
We list 74 clinical laboratories serving Waterbury, CT: 3 based there and 71 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 Waterbury?
The top-ranked clinical laboratories serving Waterbury, CT are Saint Mary's Hospital Oncology Center, Smilow - Waterbury, Sunrise Medical Laboratories, Quest Diagnostics LLC and Quest Diagnostics LLC. The full ranked list, with the official records each provider matched, is on this page.
Which clinical laboratories serving Waterbury are verified against official records?
10 of the top 10 match an active official record: Saint Mary's Hospital Oncology Center (Centers for Medicare & Medicaid Services), Smilow - Waterbury (Centers for Medicare & Medicaid Services), Sunrise Medical Laboratories (Centers for Medicare & Medicaid Services), Quest Diagnostics LLC (Centers for Medicare & Medicaid Services) and Quest Diagnostics 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 .