Evaluating thyroid function in the clinical laboratory

Background: Thyroid disorders are common in clinical medicine and laboratory confirmation is essential, especially in cases where overt signs and symptoms are absent. The measurement of thyroid-stimulating hormone (TSH) is recommended as the best indicator of thyroid function and is utilized along with thyroxine (T4) and in some circumstances triiodothyronine (T3). Aim: The aim is to evaluate the relationship between TSH and free T4 (FT4), and...