#1 Unilab Corp DBA Quest Diagnostics
Serves this area from Redding, CA (38 mi)
Call (530) 243-4509 · WebsiteClinical & Reference Laboratories in Trinity County, CA
The top-ranked clinical laboratories serving Trinity County, CA are Unilab Corp DBA Quest Diagnostics, Shasta Pathology Associates and Lab24, LLC. We list 3 clinical laboratories serving Trinity County, CA. 3 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 Trinity County, CA. 3 providers, 3 of the top 3 verified against federal or state records. Registry records checked on 2026-11-04.
Top 3 ranked clinical laboratories for Trinity County
| # | Provider | Verified records | Based in | Phone |
|---|---|---|---|---|
| 1 | Unilab Corp DBA Quest Diagnostics | ✓ CLIA-certified laboratory (certificate of compliance or accreditation, CMS) #05D0644239 | Redding, CA (38 mi) | (530) 243-4509 |
| 2 | Shasta Pathology Associates | ✓ CLIA-certified laboratory (certificate of compliance or accreditation, CMS) #05D0934580 | Redding, CA (38 mi) | (530) 255-1000 |
| 3 | Lab24, LLC | ✓ CLIA-certified laboratory (certificate of compliance or accreditation, CMS) #05D2159324 | Redding, CA (40 mi) | (530) 319-7222 |
#2 Shasta Pathology Associates
Serves this area from Redding, CA (38 mi)Call (530) 255-1000 · Website#3 Lab24, LLC
Serves this area from Redding, CA (40 mi)Call (530) 319-7222 · Website
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Frequently asked questions
How many clinical laboratories serve Trinity County?
We list 3 clinical laboratories serving Trinity County, CA: 0 based there and 3 serving it from nearby. 3 of the top 3 match an active federal or state record, checked on 2026-11-04.
Which clinical laboratories serve Trinity County?
The top-ranked clinical laboratories serving Trinity County, CA are Unilab Corp DBA Quest Diagnostics, Shasta Pathology Associates and Lab24, LLC. The full ranked list, with the official records each provider matched, is on this page.
Which clinical laboratories serving Trinity County are verified against official records?
3 of the top 3 match an active official record: Unilab Corp DBA Quest Diagnostics (Centers for Medicare & Medicaid Services), Shasta Pathology Associates (Centers for Medicare & Medicaid Services) and Lab24, LLC (Centers for Medicare & Medicaid Services). 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 .
Communities served
Weaverville, Post Mountain, Hayfork, Lewiston, Douglas City, Junction City, Salyer, Mad River, Trinity Village, Ruth, Burnt Ranch, Hyampom, Trinity Center, Coffee Creek