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孕7周hcg峰值是多少正常

更新时间: 2020-11-04 00:00:00     

HCG是怀孕后绒毛膜细胞产生的一种糖蛋白激素,叫人绒毛膜促性腺激素。随着怀孕天数的增加,HCG是逐渐增加。起初应该1.7-2天翻2-3倍。但最低的增长速度不能低于60%。随着天数增加,HCG升高的速度逐渐放缓。峰值出现于怀孕70天左右,可达20万一30万。以后逐渐缓缓下降,至到妊娠末期。如果早期HCG上升缓慢或不升或降低。均提示胚胎发育不良的可能。

关键词: hcg 峰值 多少 正常

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