Does it matter if you have a critical risk value for Down screening?

In general, the risk of Down’s syndrome is not very harmful. The first thing you need to know is what the Down’s syndrome test is for, and the Down’s syndrome test is for chromosomal abnormalities or open neural tube defects in babies. The values provided are a low risk, a high risk, and a critical risk, as Down’s syndrome screening is a preliminary screening. The detection rate is about 60-70%, so the high risk of Down’s syndrome is only a probability, not a diagnosis, and further testing is needed.