Thyrocare Thyroid 3.0Package includes 6 Tests – ANTI MICROSOMAL ANTIBODY (AMA),FREE TRIIODOTHYRONINE (FT3),FREE THYROXINE (FT4),TOTAL TRIIODOTHYRONINE (T3),TOTAL THYROXINE (T4),THYROID STIMULATING HORMONE (TSH). FT3 Test: This blood test is more reliable form of triodothyronine,as this is not affected by certain protein level,thus remains more constant.It measures thyroid function and assesses any abnormal binding protein disorders. T3 & T4 Test is useful primarily to help diagnose hyperthyroidism to help monitor treatment of thyroid disorder. T3 and T4 (thyroxine) are hormones produced by the thyroid gland. These T3 and T4 help control the rate at which the body uses energy and are regulated by a feedback system. TSH Test : This helps to evaluate overall thyroid function.Thyroid stimulating hormone (TSH) is produced when hypothalamus releases thyrotropin releasing hormone (TRH).This TRH thereafter triggers pituitary gland to release TSH. The Thyroid Panel is an important panel of tests that evaluates the thyroid function. It is also used to diagnose hyperthyroidism and hypothyroidism (having an over-active or under-active thyroid). The thyroid is an endocrine gland that not only controls metabolism, but also secrete hormones which are necessary for development, growth & nearly every physiological process in the body.