Thyroid Profile - T3 T4 TSH - 3G UL

Triiodothyronine t3 , is a thyroid hormone. it affects almost every physiological process in the body, including growth, development, metabolism, body temperature, and heart rate. production of t3 and its prohormone thyroxine (t4) is activated by thyroid-stimulating hormone (tsh), which is released from the pituitary gland. elevated concentrations of t3, and t4 in the blood inhibit the production of tsh.the ability of quantitate circulating levels of tsh is important in evaluating thyroid function. it is especially useful in the differential diagnosis of primary (thyroid) from secondary (pituitary) and tertiary (hypothalamic) hypothyroidism. tsh assays with increased sensitivity and specificity provide a primary diagnostic tool to differentiate hyperthyroid from euthyroid patients. thyroxine t4, thyroxine’s principal function is to stimulate the metabolism of all cells and tissues in the body. excessive secretion of thyroxine in the body is hyperthyroidism, and deficient secretion is called hypothyroidism. most of the thyroid hormone in blood is bound to transport proteins