Clinical & Reference Laboratories in McHenry County, IL

We list 72 clinical laboratories serving McHenry County, IL: 1 based there and 71 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 McHenry County, IL are Oak Crest Laboratory Services, Heart Team, LLC, The, Pwn Laboratory, LLC, Biobloom Diagnostics LLC and American Molecular Laboratories 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: Oak Crest Laboratory Services (Centers for Medicare & Medicaid Services), Heart Team, LLC, The (Centers for Medicare & Medicaid Services), Pwn Laboratory, LLC (Centers for Medicare & Medicaid Services), Biobloom Diagnostics LLC (Centers for Medicare & Medicaid Services) and American Molecular Laboratories 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.