#1 Ethos Laboratories
Based in Worcester, MA
Call (513) 889-4423Clinical & Reference Laboratories in Worcester, MA
The top-ranked clinical laboratories serving Worcester, MA are Ethos Laboratories, Laboratory Corporation Of America Holdings and Quest Diagnostics Massachusetts LLC. We list 71 clinical laboratories serving Worcester, MA. 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 Worcester, MA (Worcester County). 71 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 Worcester
#2 Laboratory Corporation Of America Holdings
Based in Worcester, MACall (508) 363-6194 · Website#3 Quest Diagnostics Massachusetts LLC
Based in Worcester, MACall (508) 425-5998#4 Quest Diagnostics Massachusetts LLC
Based in Worcester, MACall (508) 755-1233#5 Labcorp At St Vincent Cancer & Wellness
Serves this area from Worcester, MA (1 mi)Call (508) 363-6184#6 Applied Pathology Systems, LLC
Serves this area from Shrewsbury, MA (4 mi)Call (508) 796-3875 · Website#7 Gba Central Lab Services US, LLC
Serves this area from Westborough, MA (10 mi)Call (508) 329-1292 · Website#8 Esoterix Genetic Laboratories LLC
Serves this area from Westborough, MA (12 mi)Call (508) 898-9001 · Website#9 Quest Diagnostics Esoteric Massachusetts, Inc DBA
Serves this area from Marlborough, MA (13 mi)Call (774) 849-3128#10 Quest Diagnostics, LLC
Serves this area from Marlborough, MA (13 mi)Call (774) 369-3900 · Website
20 more providers serving this area
- Quest Diagnostics Ma LLC, Marlborough, MA (13 mi)
- Reprosource Fertility Diagnostics, Inc, Marlborough, MA (13 mi)
- Epigendx Inc, Hopkinton, MA (14 mi)
- Kuchnir Dermatology & Dermatologic Surgery, Marlborough, MA (14 mi)
- Variantyx, Inc, Framingham, MA (17 mi)
- Kuchnir Dermatology And Dermatologic Surgery, Milford, MA (19 mi)
- Kbmo Diagnostics, Hopedale, MA (19 mi)
- Charles River Medical Associates Laboratory, Framingham, MA (20 mi)
- Kephera Diagnostics, Framingham, MA (20 mi)
- Quest Diagnostics Massachusetts LLC, Natick, MA (21 mi)
- Sbh Diagnostics Inc, Natick, MA (22 mi)
- Pillar Biosciences, Inc, Clinical Lab, Natick, MA (22 mi)
- Novovita Histopath Laboratory LLC, Natick, MA (24 mi)
- Eco Laboratory, LLC, Acton, MA (25 mi)
- Cls Diagnostics, Franklin Town, MA (25 mi)
- Adult & Pediatric Dermatology PC, Concord, MA (27 mi)
- Cohen Dermatopathology, PC DBA Inform Diagnostics, Dover, MA (27 mi)
- Mersi Immunopathology Laboratory, Waltham, MA (28 mi)
- Beacon Pathology LLC, Dover, MA (29 mi)
- Dermpath New England, LLC, Wellesley, MA (29 mi)
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Frequently asked questions
How many clinical laboratories serve Worcester?
We list 71 clinical laboratories serving Worcester, MA: 4 based there and 67 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 Worcester?
The top-ranked clinical laboratories serving Worcester, MA are Ethos Laboratories, Laboratory Corporation Of America Holdings, Quest Diagnostics Massachusetts LLC, Quest Diagnostics Massachusetts LLC and Labcorp At St Vincent Cancer & Wellness. The full ranked list, with the official records each provider matched, is on this page.
Which clinical laboratories serving Worcester are verified against official records?
10 of the top 10 match an active official record: Ethos Laboratories (Centers for Medicare & Medicaid Services), Laboratory Corporation Of America Holdings (Centers for Medicare & Medicaid Services), Quest Diagnostics Massachusetts LLC (Centers for Medicare & Medicaid Services), Quest Diagnostics Massachusetts LLC (Centers for Medicare & Medicaid Services) and Labcorp At St Vincent Cancer & Wellness (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 .