天气预报 > 其他 > 查怀孕试纸多少天能查出来啊
查怀孕试纸多少天能查出来啊
更新时间: 2020-11-04 00:00:00  

在月经周期推迟7天以后或同房10天至14天用早早孕试纸可以检查出来。

用试纸检测的是尿中的HCG值,即人体绒手膜促性腺激素。这种激素是由胎盘制造的,一般在怀孕几天后它就会出现在尿液里,但由于量少,开始不易测验出来,直到10天至14天才日益明显。

关键词: 怀孕 试纸 多少 出来

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