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先天性甲状腺功能减低症(简称甲低)是婴幼儿的一种常见病,约占新生儿的四千分之一,3,3′,5′—三碘甲状腺原氨酸(rT_3)为甲状腺素代谢产物之一,其血清含量系研究甲状腺激素代谢和甲状腺功能的一个指标。据报道新生儿脐血血清rT_3及T_3/rT_3比值测定对新生儿甲低的早期诊断有重要意义。
Congenital hypothyroidism (hypothyroidism) is a common disease in infants and young children, accounting for about one fourth of the newborn, 3,3 ’, 5’-triiodothyronine (rT_3) for the thyroid One of the metabolic products, the serum content of thyroid hormone metabolism and thyroid function of an indicator. It is reported that neonatal cord blood serum rT_3 and T_3 / rT_3 ratio determination of neonatal hypothyroidism early diagnosis of great significance.