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Sample Type: SERUM
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Thyroxine(T4) is a hormone produced by the thyroid gland that plays an important role in body metabolism. It effects the energy level, mood, weight, heart rate and other important elements of your health. Most of the T4 that circulates in the blood is bound to a protein. This test measures the total thyroxine level, both bound and unbound. Since the Total T4 varies according to the amount of protein available, a free T5 is sometimes checked to determine the actual status of the hormone.
Test is performed on a blood sample. No preparation is needed. Inform your doctor about all the medicines, vitamins, nutritional supplements, herbal or ayurvedic preparations, and homeopathic medicines you are taking