Down syndrome screening still has low risks. Down screening is a method of assessing the risk of Down syndrome in the fetus by analyzing the genetic material in the blood of pregnant women. Although Down syndrome screening has gradually become an indispensable part of pregnancy care, low-risk test results still cannot rule out the possibility of fetal Down syndrome. So, what methods can be used to prevent pregnant women from giving birth to children with Down syndrome? Avoiding the risk of Down syndrome 1. Combining multiple methods