TF2 — Thyroid Profile 1

Description

A COMPLETE SET OF TESTS THAT CHECK: • Total T4 (thyroxine) — bound + free hormone • Thyroid Stimulating Hormone (TSH) — pituitary signal to thyroid • Free T3 (triiodothyronine) — active T3 not bound to proteins • Free T4 — unbound, bioavailable thyroxine • Thyroglobulin antibodies (TgAb) — antibodies against thyroglobulin • Thyroid peroxidase antibodies (TPOAb) — antibodies against thyroid peroxidase enzyme WHAT THIS TEST SUITE REVEALS: • The functional status of the thyroid (whether it’s producing too much or too little hormone) • Whether the regulation by the pituitary (via TSH) is appropriate • How much active thyroid hormone (T3, T4) is available for body tissues • Whether there is autoimmune activity against thyroid tissue (via TgAb and TPOAb) • Helps distinguish causes of hypothyroidism or hyperthyroidism, e.g. Hashimoto’s thyroiditis or Graves’ disease • Useful for monitoring thyroid disease, response to therapy, or to clarify ambiguous thyroid function results

Biomaterial

Venous blood

Preparation

It is advisable to take the test on an empty stomach in the morning.