“低T_3综合征”是一组甲状腺激素代谢紊乱征候群,临床上比较常见,近年来才引起重视,主要以血清内代谢性T_3降低,rT3升高等甲状腺激素水平异常为特征,常需与甲亢和甲低鉴别,T_3降低程度与原发病轻重和预后相关。 “Low T 3 syndrome” is a syndrome of thyroid hormone metabolic disorder, clinically more common in recent years, only pay attention to, mainly in serum metabolic T_3 decreased rT3 elevated thyroid hormone levels such as abnormalities often associated with hyperthyroidism And A low identification, T_3 reduction in severity and prognosis of the primary disease.