Clinical & Reference Laboratories in Smithtown, NY

We list 79 clinical laboratories serving Smithtown, NY: 1 based there and 78 serving it from nearby. 10 of the top 10 match an active federal or state record, checked on 2026-11-04.

The top-ranked clinical laboratories serving Smithtown, NY are Mcclain Laboratories LLC, Stoneview Pathology Medical Service PLLC, Stony Brook Pathologists 1320 Laboratory, Cytogenx Corp and Stony Brook Pathologists Ufpc Laboratory. The full ranked list, with the official records each provider matched, is on this page.

10 of the top 10 match an active official record: Mcclain Laboratories LLC (Centers for Medicare & Medicaid Services), Stoneview Pathology Medical Service PLLC (Centers for Medicare & Medicaid Services), Stony Brook Pathologists 1320 Laboratory (Centers for Medicare & Medicaid Services), Cytogenx Corp (Centers for Medicare & Medicaid Services) and Stony Brook Pathologists Ufpc Laboratory (Centers for Medicare & Medicaid Services), and 5 more on this page. Each badge links to the official record it matched.

By our published methodology: verified registrations, documented capabilities, years registered and responsiveness. Sponsored placements are shown separately and never affect rank.

"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.

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.