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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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