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HARMONIZED THYROID - ABTH
Analytes/procedures in bold type are regulated for proficiency testing by the Centers for Medicare & Medicaid Services (CMS).
Challenges per Shipment
Number of Shipments
Triiodothyronine (T3), free
Two shipments per year
Triiodothyronine (T3), total
Thyroxine (T4), free
Thyroxine (T4), total
Thyroid‑stimulating hormone (TSH)
Analytes will be evaluated using harmonization.
Specimens are collected by a modified application of Clinical and Laboratory Standards Institute Guideline CLSI C37‑A, Preparation and Validation of Commutable Frozen Human Serum Pools as Secondary Reference Materials for Cholesterol Measurement Procedures; Approved Guideline.