Clinical & Reference Laboratories in Essex County, NJ

We list 61 clinical laboratories serving Essex County, NJ: 8 based there and 53 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 Essex County, NJ are Advanced Comprehensive Laboratory, Clinical Laboratory Of Nj, Cooper Genomics, Institute Of Reproductive and Nowlab. 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: Advanced Comprehensive Laboratory (Centers for Medicare & Medicaid Services), Clinical Laboratory Of Nj (Centers for Medicare & Medicaid Services), Cooper Genomics (Centers for Medicare & Medicaid Services), Institute Of Reproductive (Centers for Medicare & Medicaid Services) and Nowlab (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.