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3,3’,5’三碘甲腺原氨酸(rT_3)是一种无激素活性的碘化甲腺原氨酸。自1974年Chopra证实它是人血清和甲状腺球蛋白中的一种正常组分以来,人们对rT_3进行了广泛的研究。从而对甲状腺激素的代谢、rT_3的生理变化和临床意义有了新的认识。目前血清rT_3浓度的测定已成为研究甲状腺激素代谢的一项重要指标。但是关于这项检查对甲亢临床实践的应用价
3,3 ’, 5’ triiodothyronine (rT_3) is a hormone-free activity of thyronine iodide. Since it was confirmed by Chopra in 1974 as a normal component of human serum and thyroglobulin, rT_3 has been extensively studied. Thus the thyroid hormone metabolism, rT_3 physiological changes and clinical significance of a new understanding. The current determination of serum rT_3 concentration has become an important indicator of thyroid hormone metabolism. However, the application of this test on clinical practice of hyperthyroidism