Purpose of Website

• To help an individual interpret their thyroid lab tests and to recommend what thyroid labs they should have tested in the future.
• To educate on what each lab test represents, what are the variables involved with the each lab test, and what may influence any given lab test.

Table of Contents

1. Poor Man's Chart of Thyroid Metabolism
2. Primary Thyroid Lab TestsPrimary Thyroid Lab Tests
   1. Thyroid Stimulating Hormone (TSH):TSH
   2. Total T4 (Thyroxine)Total T4
   3. Free T4 (Thyroxine)Free T4
   4. Free T3 (Triiodothyronine)
   5. Reverse T3 (rT3, Reverse TriiodothyronineReverse T3
   6. Thyroid Peroxidase Antibody (Thyroperoxidase Antibody, TPO)Reverse T3
   7. Thyroglobulin Antibodies (TgAb)Thyroglobulin AntibodyThyroglobulin Antibody
3. Secondary Thyroid Lab Tests
   1. Thyroglobulin (Tg)
   2. Thyroid Stimulating Immunoglobulin (TSI)
   3. Sex Hormone Binding Globulin (SHBG)
   4. Ferritin
   5. 25 Dihydroxy Vitamin D
   6. RBC Magnesium (Red Blood Cell Magnesium)
   7. Cortisol
4. Worthless Thyroid Lab Tests
   1. T3 Uptake (T3 Resin Uptake)
   2. Thyroid-Binding Globulin (Thyroxine-Binding Globulin, TB
5. Additional Free Resources & Links