由于适当地供应碘,人的T_4,T_3和TSH水平很少有年令差别。除生后和新生儿早期立即出现特有的TSH峰外,所报导的血清变化通常是很少的并且也有争议。然而,有些资料也指出从幼儿到15-16岁的血清T_4,T_3水平呈进行性降低是与甲状腺结合球旦白 Due to the proper supply of iodine, there are very few seasonal differences in the levels of T_4, T_3 and TSH in humans. In addition to the unique TSH peaks present immediately after birth and in the early neonates, the reported serological changes are usually small and controversial. However, some data also point out that the serum T_4 and T_3 levels decrease gradually from young children to 15-16 years of age and are associated with thyroid binding globulin