Table of Contents

Section I. Forward and Introduction

Section II. Pre-analytic factors

Section III. Thyroid Tests for the Laboratorian and Physician

A. Total Thyroxine (TT4) and Total Triiodothyronine (TT3) methods

B. Free Thyroxine (FT4) and Free Triiodothyronine (FT3) tests

C. Thyrotropin/Thyroid Stimulating Hormone (TSH) measurement

D. Thyroid Autoantibodies:

Thyroid Peroxidase Antibodies (TPOAb)

Thyroglobulin Antibodies (TgAb)

Thyrotrophin Receptor Antibodies (TRAb)

E. Thyroglobulin (Tg) Measurement

F. Urinary Iodine Measurement

G. Thyroid Fine Needle Aspiration Biopsy and Cytology

H. Screening for Congenital Hypothyroidism

Section IV. The Importance of the Laboratory – Physician Interface

Bibliography

Appendices A, B, and C