Physical examinations are required at different months after pregnancy, and the items to be examined also vary. Some pregnant women may think that unnecessary examinations are unnecessary and will not do them. In fact, many pregnant women overlook the importance of examinations, such as non-invasive DNA and Down syndrome screening. Many pregnant women only perform one type of examination. So which is better, non-invasive DNA or Tang screening?
In fact, there is a significant difference between non-invasive DNA testing and Down syndrome screening. Both are tested by examining the venous blood of pregnant women. Down syndrome screening tests for the risk of fetal trisomy 21 syndrome and open neural tube defects, while non-invasive DNA testing tests for Down syndrome, Patao syndrome, and Edwards syndrome. The diseases examined by the two are different, but the accuracy of non-invasive DNA testing is relatively high in determining whether the fetus has trisomy 21 syndrome.
In fact, choosing to undergo prenatal check ups should be based on one's own situation. If the pregnant woman is young and has no history of Down syndrome, then Down syndrome screening can be done. If the pregnant woman is over 35 years old and has inherited Down syndrome, further testing is needed, including Down syndrome screening and non-invasive DNA testing. If the pregnant woman's economic conditions permit, both tests can be performed, which will result in higher accuracy. Every examination during pregnancy has its own significance, so for the sake of fetal health, it is recommended that pregnant women cooperate.
