Pregnant women will be very curious about whether it is a boy or a girl after getting pregnant. Sometimes it's out of hope, wanting to be a boy or a girl. Sometimes it's out of curiosity. But no matter what the reason is, doctors will not tell pregnant mothers. Whether it is due to medical ethics or national policies, this cannot be said, but there are still many pregnant mothers who will try their best to know first. Next, let's take a look with the editor at how the results of Down syndrome screening determine gender accuracy?
How to determine gender accuracy based on Down syndrome screening results
1. Down syndrome is a common chromosomal disease in humans. Due to the severe intellectual disability of Down syndrome patients, some may even be unable to take care of themselves. Therefore, almost all developed countries currently conduct Down syndrome screening on pregnant women to achieve the goal of eugenics and good parenting. So Down syndrome screening is only a test conducted for the risk factor of Down syndrome, and its results have nothing to do with the gender of the fetus.
2. HCG is a test of pregnant women's serum, not a test of the fetus; AFP (serum alpha fetoprotein) is a special protein produced by fetal liver cells, which is not normally secreted by adults. Therefore, AFP is used as an indicator to measure whether a baby's development is normal. In theory, these two indicators are not directly related to the gender of the baby. After studying the records of over 1000 recent Tang screening reports from hospitals, we also found that these values are not closely related to the gender of the baby. On the contrary, there are many cases where the MOM value of AFP is less than 1, but in reality it is a boy.
3. Firstly, let's take a look at the MOM value of b-HCG: below 0.4, the vast majority are boys; 1.0 or above, the vast majority are girls; Between 0.4 and 1.0 is the critical range, which is possible for both men and women. Then, by combining the two numerical values (b-HCG and AFp), it becomes more accurate: the lower the MOM value of b-HCG (
