Clinical & Reference Laboratories in Rancho Cucamonga, CA

We list 300 clinical laboratories serving Rancho Cucamonga, CA: 3 based there and 297 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 Rancho Cucamonga, CA are Huntington Reproductive Center Medical Group, Individx, Platinum Digestive Health, Upland Laser Dermatology and Brio Clinical 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: Huntington Reproductive Center Medical Group (Centers for Medicare & Medicaid Services), Individx (Centers for Medicare & Medicaid Services), Platinum Digestive Health (Centers for Medicare & Medicaid Services), Upland Laser Dermatology (Centers for Medicare & Medicaid Services) and Brio Clinical 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.