rt3u…

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what the risks are t3ru, resin t3 uptake, t3 resin uptake, thyroid hormone-binding ratio, test that measures the rt3u, in the blood, blood is drawn, a vein, by capillary puncture, finger prick, health care provider, advise to withhold drugs, affect the test, "special considerations", the needle is inserted to draw blood, feel moderate pain, others feel only a prick, stinging sensation, some throbbing, this test is performed, thyroid function test, t4, thyroxine, the major hormone controlling the basal metabolic rate, metabolism, the t4, in the blood is attached to proteins, bound hormones serve, a t4 reservoir, free t4 is active, cells convert t4 to triiodothyronine, t3, once converted, t3 is involved, in the synthesis of various proteins, measuring rt3u helps estimate the level of thyroxin binding globulin, tbg, the protein that carries most, the t3, t4, in the blood, rt3u is inversely proportional to tbg levels, tbg level goes up, rt3u, go down, pregnancy, estrogen therapy, oral contraceptives, stimulate increased production of tbg by the liver, androgens, male hormones, serious illness, kidney disease, lower tbg, changes in tbg, affect the level of free t4, thyroid hormone functions, important to not be incorrectly diagnosed, having thyroid dysfunction, it would result in inappropriate treatment, 24% to 37%, greater-than-normal levels, hyperthyroidism, nephrotic syndrome, protein malnutrition, renal failure, lower-than-normal levels, acute hepatitis, hypothyroidism, hypothyroidism, primary, hypothyroidism, secondary, pregnancy, estrogen administration, additional conditions under which the test performed, chronic thyroiditis, hashimoto's disease, drug-induced hypothyroidism, graves' disease, subacute thyroiditis, thyrotoxic periodic paralysis, toxic nodular goiter risks, associated, having blood drawn, drugs, increase rt3u, lower tbg, anabolic steroids, heparin, phenytoin, salicylates, high dose, warfarin, drugs, decrease rt3u, raise tbg, antithyroid agents, clofibrate, estrogen, oral contraceptives, thiazides.