#1Bio Corp Clinical Lab
Serves this area from Santa Fe Springs, CA (5 mi)
Clinical & Reference Laboratories in Downey, CA
The top-ranked clinical laboratories serving Downey, CA are Bio Corp Clinical Lab, Arbelos1 LLC and Bioanalysis Diagnostic Laboratories. We list 292 clinical laboratories serving Downey, CA. 30 of the providers shown match an active record from Centers for Medicare & Medicaid Services, checked on the date shown. Rankings follow our published methodology; sponsored placements never change rank.
Clinical & Reference Laboratories serving Downey, CA (Los Angeles County). 292 providers, 10 of the top 10 verified against federal or state records. Registry records checked on 2026-11-04.
Top 10 ranked clinical laboratories for Downey
#2Arbelos1 LLC
Serves this area from Montebello, CA (6 mi)#3Bioanalysis Diagnostic Laboratories
Serves this area from Artesia, CA (6 mi)#4East Side Pathology Associates Med Grp, Inc
Serves this area from South San Gabriel, CA (8 mi)#5Affiliated Pathologists Medical Group Inc
Serves this area from CA#6Rational Therapeutics, LLC
Serves this area from Signal Hill, CA (9 mi)#7Press Consultation Laboratories
Serves this area from Los Angeles, CA (10 mi)#8Metic Transplantation Labs Inc
Serves this area from Los Angeles, CA (10 mi)#9Sun Clinical Laboratories
Serves this area from El Monte, CA (10 mi)#10Grace Laboratory
Serves this area from Carson, CA (10 mi)
20 more providers serving this area
- American Bio-clinical Laboratories, Los Angeles, CA (10 mi)
- Biogene Diagnostics, Los Alamitos, CA (10 mi)
- Mobile Stat Lab, Los Angeles, CA (10 mi)
- New World Clinical Laboratory, Inc, Los Alamitos, CA (10 mi)
- Caris Mpi, Inc, Buena Park, CA (10 mi)
- Altasciences Los Angeles, Cypress, CA (10 mi)
- Consolidated Medical Bio-analysis Inc, Cypress, CA (11 mi)
- Neoanalytics Laboratory, Alhambra, CA (11 mi)
- Laboratory Corporation, Los Angeles, CA (11 mi)
- Open Healthcare US, Gardena, CA (11 mi)
- Laboratory Corporation Of America, Los Angeles, CA (11 mi)
- Community Laboratory, Inc, Los Angeles, CA (12 mi)
- Sterling Pathology National Laboratories, Seal Beach, CA (12 mi)
- Pain Medicine Associates, Fullerton, CA (12 mi)
- Fulgent Therapeutics LLC, El Monte, CA (12 mi)
- Omnia Diagnostic Laboratory, LLC, West Carson, CA (12 mi)
- Huntington Reproductive Center Medical Group,, Fullerton, CA (12 mi)
- Pathology Associates Laboratory, Anaheim, CA (12 mi)
- Lifequest Diagnostic, Inc, Anaheim, CA (12 mi)
- Ashley Clinical Diagnostic Lab Inc, Los Angeles, CA (12 mi)
Request quotes
Frequently asked questions
How many clinical laboratories serve Downey?
We list 292 clinical laboratories serving Downey, CA: 0 based there and 292 serving it from nearby. 10 of the top 10 match an active federal or state record, checked on 2026-11-04.
Which clinical laboratories serve Downey?
The top-ranked clinical laboratories serving Downey, CA are Bio Corp Clinical Lab, Arbelos1 LLC, Bioanalysis Diagnostic Laboratories, East Side Pathology Associates Med Grp, Inc and Affiliated Pathologists Medical Group Inc. The full ranked list, with the official records each provider matched, is on this page.
Which clinical laboratories serving Downey are verified against official records?
10 of the top 10 match an active official record: Bio Corp Clinical Lab (Centers for Medicare & Medicaid Services), Arbelos1 LLC (Centers for Medicare & Medicaid Services), Bioanalysis Diagnostic Laboratories (Centers for Medicare & Medicaid Services), East Side Pathology Associates Med Grp, Inc (Centers for Medicare & Medicaid Services) and Affiliated Pathologists Medical Group Inc (Centers for Medicare & Medicaid Services), and 5 more on this page. Each badge links to the official record it matched.
How are these companies ranked?
By our published methodology: verified registrations, documented capabilities, years registered and responsiveness. Sponsored placements are shown separately and never affect rank.
What does "Verified" mean on this page?
"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.
What does CLIA certification mean?
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.
"Verified" means we matched the provider to an active official record on the date shown. The absence of a badge only means we have not verified that item. How we rank and verify. Page updated .