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HARMONIZED THYROID - ABTH
ABTH
Analytes/procedures in bold type are regulated for proficiency testing by the Centers for Medicare & Medicaid Services (CMS).

Analyte Challenges per Shipment Number of Shipments
T3, free (triiodothyronine, free) 3 Two shipments per year
T3, total (triiodothyronine, total) 3
T4, free (thyroxine, free) 3
T4, total (thyroxine, total) 3
Thyroid‑stimulating hormone (TSH) 3

Additional Information

  • Analytes will be evaluated using harmonization.
  • Specimens are collected by a modified application of Clinical Laboratory and 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.

Program Information

  • Three 1.0‑mL frozen human specimens

Shipping Schedule

  • Shipment A: May 7
  • Shipment B: November 12






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