Clinical & Reference Laboratories in Monrovia, CA

We list 293 clinical laboratories serving Monrovia, CA: 7 based there and 286 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 Monrovia, CA are Ahmad Ibrahim Md, Laboratory Corporation Of America, Magic Owl Laboratories, Inc, Ms Diagnostic Laboratory and Priva Path Labs Inc. 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: Ahmad Ibrahim Md (Centers for Medicare & Medicaid Services), Laboratory Corporation Of America (Centers for Medicare & Medicaid Services), Magic Owl Laboratories, Inc (Centers for Medicare & Medicaid Services), Ms Diagnostic Laboratory (Centers for Medicare & Medicaid Services) and Priva Path Labs Inc (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.