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孕妇怀孕五周hcg多少
更新时间: 2020-11-04 00:00:00  

人绒毛膜促性腺激素(HCG)是由胚胎滋养层细胞分泌的一种糖蛋白,当受精卵进入宫腔内着床开始发育后,就开始分泌和释放绒毛膜促性腺激素。怀孕后绒毛膜促性腺激素的水平与孕周有关,在不同的孕妇之间存在显著的个体差异。一般在怀孕早期时,HCG每天以成倍的速度升高,在怀孕第八周时达到高峰并逐渐下降,第16周左右时维持在一个恒定的水平。怀孕5周时(月经推迟1周)HCG的值一般在50-500mIU/ml之间。

关键词: 孕妇 怀孕 hcg 多少

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