There is a moderate risk of Down’s syndrome screening, so you don’t need to be too nervous. The Down’s syndrome screening is only a preliminary review, which can only roughly determine that the baby is abnormal, but it cannot be accurately determined. If the Down’s syndrome screening determines that there is a problem, further testing is needed. If the baby still has a problem after the non-invasive DNA test, further amniocentesis is needed to prove whether the baby has a problem. Both non-invasive DNA and Down’s syndrome screening are done by taking the pregnant woman’s blood serum, which allows for a comprehensive analysis of the fetus, not directly to the baby. The amniocentesis is done by taking the amniotic fluid and directly analyzing the specific situation of the fetus, which is the final test result and the gold standard.