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正常人血清甲胎蛋白(AFP)低于20毫微克/毫升,在妊娠后期明显升高。有报道在胎儿开放性神经管缺损、腹壁缺损(脐膨出多见)、先天性肾
Normal serum alpha-fetoprotein (AFP) of less than 20 ng / ml, significantly increased in the second trimester of pregnancy. It has been reported in fetal open neural tube defects, abdominal wall defects (umbilical swelling more common), congenital kidney