Tang screening is a very important examination for women during pregnancy. This examination can timely detect whether the fetus has some chromosomal genetic diseases, and intervene in a timely manner after early detection. So, how to calculate the mother value of Tang screening?
In the Tang screening inspection, the mom values appearing on the result sheet refer to multiples of the median values, mainly to see if the values of four of the data are normal. If the values are abnormal, it indicates that the probability of pregnant women having Down syndrome syndrome syndrome is much higher. These four data include inhibin A, free estriol, human chorionic gonadotropin, and alpha fetoprotein.
Among these values, if the alpha fetoprotein is higher than 2.5mom, it belongs to a high-risk state, and the normal range is between 0.7 and 2.5mom. The lower the value of free survival, the higher the level of chorionic gonadotropin or inhibin A, and the higher the risk of Down syndrome in the fetus.
In general, in order to evaluate the likelihood of a pregnant woman carrying a Down syndrome fetus, doctors will input the values of these four items, along with the pregnant woman's age, weight, and gestational weeks, into the computer. If the estimated comprehensive test value shows a positive result, the likelihood of the disease is high and further examination is needed.
