Clinical & Reference Laboratories in El Monte, CA

We list 293 clinical laboratories serving El Monte, CA: 3 based there and 290 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 El Monte, CA are Four Tech Laboratory LLC, Fulgent Therapeutics LLC, Sun Clinical Laboratories, Outpatient Biopsy Center and City Of Hope Histocompatibility (hla). 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: Four Tech Laboratory LLC (Centers for Medicare & Medicaid Services), Fulgent Therapeutics LLC (Centers for Medicare & Medicaid Services), Sun Clinical Laboratories (Centers for Medicare & Medicaid Services), Outpatient Biopsy Center (Centers for Medicare & Medicaid Services) and City Of Hope Histocompatibility (hla) (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.