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筛查风险值多少是正常值是多少
更新时间: 2020-11-04 00:00:00  

血筛查值大于1/270为高危人群,正常值是1/700左右,国际上标准是1/270。

唐氏筛查是唐氏综合征产前筛选检查的简称。目的是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、孕周等方面来判断胎儿患先天愚型、神经管缺陷的危险系数。

关键词: 风险 多少 正常值

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