The cost of Down’s syndrome screening is$180. Down’s syndrome screening is divided into early pregnancy Down’s syndrome screening (9-13 weeks plus 6 days of pregnancy) and mid-pregnancy Down’s syndrome screening (15-20 weeks plus 6 days of pregnancy), which mainly involves drawing peripheral blood of the pregnant woman, and it is simple, fast and non-invasive. If the screening test is high risk, it indicates that the pregnant woman is at increased risk of having a child with Down’s syndrome and further prenatal diagnosis is necessary to confirm the diagnosis. Diagnostic methods include chorionic villus aspiration and amniocentesis, where fetal chorionic tissue and amniotic fluid are extracted for chromosome culture and karyotype analysis. It is important to clarify that Down’s syndrome screening can only help determine how likely a fetus is to have Down’s syndrome, but it cannot determine whether the fetus is a child with Down’s syndrome.