Patient's question:
My sister is currently pregnant. Because she is a bit young, she is very worried about the child. She wants to have a better Down syndrome screening, but she doesn't know if it is accurate or not, and she is also troubled by this. Is the Down syndrome screening accurate?Doctor's answer:
The accuracy of the Down syndrome screening is not very high, most of which is around 60%. Generally, the detailed examination to exclude chromosomal abnormalities is mainly performed through non-invasive DNA or amniocentesis, which has a higher accuracy rate, up to 99%. Due to the higher risk of amniocentesis, it can easily affect the fetal growth and development. Therefore, in this stage, it is considered to further exclude chromosomal abnormalities leading to congenital idiocy by performing non-invasive DNA examination.