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唐筛多少周算中期
更新时间: 2020-11-04 00:00:00  

15-20周左右。唐氏筛查是唐氏综合征产前筛选检查的简称,通过化验孕妇的血液,检测母体血清中甲型胎儿蛋白、绒毛促性腺激素和游离雌三醇的浓度,并结合孕妇的年龄、体重、孕周等方面来判断。

关键词: 多少 中期

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