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早早孕试纸要多少天才会变深
更新时间: 2020-11-04 00:00:00  

早早孕试纸要2-3天时间才会变深,需要多注意观察,然后3天后复查。测孕纸的工作原理是检测hCG值,即人体绒毛膜促性腺激素的值,这种激素是由胎盘制造的,一般在怀孕2-3天后它就会出现在尿液里。

关键词: 早早 试纸 多少 天才

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