After becoming pregnant, women should go to the hospital for various examination items to ensure their physical health and stable growth and development of the fetus in their belly. And non-invasive DNA and amniocentesis are one of the projects that women need to do after pregnancy. So, some people want to know: what are the differences between non-invasive DNA and amniocentesis?
The ultimate goal of non-invasive DNA and amniocentesis is the same, which is to examine the chromosomal condition of the fetus and ensure that it does not have the possibility of Down syndrome. But there are still significant differences between the two in some aspects. For example, non-invasive DNA testing involves extracting free DNA from the peripheral blood of pregnant women to detect fetal chromosomal development. Amniotic fluid aspiration is a method of detecting fetal chromosomal development through the amniotic fluid of pregnant women.
Non invasive DNA is suitable for pregnant women between 12-26 weeks of gestation. Its advantage is high detection accuracy and it will not harm the health of both the mother and the fetus. However, its cost is relatively high and it is not suitable for families with low to medium levels. The main feature of non-invasive DNA testing is for multiple mothers.
Amniotic fluid aspiration is suitable for pregnant women between 16-22 weeks of pregnancy. Although its accuracy is not as high as non-invasive DN, it is still higher than other examination methods. Moreover, the scope of fetal chromosome examination is currently the widest among the examination items. However, there are certain risks during its examination, which may affect the health of the fetus or mother. So doctors are not likely to recommend pregnant women to use amniocentesis to check their bodies.
