Down syndrome screening for gender accuracy

After becoming pregnant, mothers all hope to know some issues about the baby's gender, so when doing the check-up, they will quietly consult the doctor about the baby's gender, but this cannot be disclosed. Some people think that Down syndrome screening can check the baby's gender, but this is not the case. The main function of Down syndrome screening is to check for some congenital defects. Whether it can distinguish between boys and girls depends on the examination process.

How to tell the gender of Down syndrome screening results

Down syndrome screening is a method of detecting whether the fetus has congenital defects and cannot distinguish between boys and girls. If parents are eager to know the gender of the fetus, they can make a rough judgment by observing the β-HCG and AFP values, but the results are not guaranteed to be accurate.

First look at the MOM value of β-HCG:

Below 0.4, the vast majority are boys;

Above 1.0, the vast majority are girls;

Between 0.4 and 1.0 is a critical range, which is possible for both men and women.

Then, it is more accurate to combine the two values ​​(β-HCG and AFP):

The lower the MOM value of β-HCG (<0 4="" afp="" mom="">1), the more likely it is a boy;

The higher the MOM value of β-HCG (>0.8) and the lower the MOM value of AFP (<1), the more likely it is a girl.

In addition, in the serum of Down syndrome children and false positive Down syndrome patients, regardless of whether the fetus is male or female, the β-HCG value is high, but the AFP value is low.

Is Down syndrome screening accurate in determining the gender of a child?

Down syndrome screening determines the functional status of the placenta based on the maternal hormone level and has nothing to do with determining whether the baby is a boy or a girl. Many people say that the gender of a child can be determined through Down syndrome screening results, but this is just empirical knowledge and has no scientific basis. It can only be used for reference.

It is not reliable to predict the gender of a baby based on the results of Down syndrome screening. Regarding the prediction of the gender of a baby, you should know the following points:

1. Currently, the only accurate and reliable way to know the sex of the fetus is to look at the fetus's genitals through B-ultrasound or to do amniocentesis to detect chromosomes.

2. Other B-ultrasound data streams, uterine surface cleaning streams, uterine height streams, belly shape streams, early gestational sac shape streams, Down syndrome screening data streams, pregnancy reaction streams, fetal movement streams, fetal growth sac streams, etc. are all seemingly reasonable pseudosciences, without any scientific basis, and are all folk experience. It's essentially the same as "sour boy, spicy girl".

3. If you really want to know the gender of the fetus, the most feasible and accurate method is to find an ultrasound doctor through connections. But doctors won’t tell you at the moment, because each hospital has relevant regulations, strictly requiring doctors to keep the B-ultrasound results to a confidential level to determine the gender of the baby. Men and women are equal, and it is equally good to have a boy or a girl.