There is a critical risk for Down’s syndrome screening, but there is no need to be too nervous about this. The critical risk indicates the possibility of genetic problems in the fetus, but it is not certain, because the accuracy of Down’s syndrome screening can only reach 65%, and further tests are needed. It is possible to do non-invasive DNA or amniotic fluid testing, which is more accurate. If non-invasive DNA is done, the blood of the pregnant woman can be extracted and compared with her gestational age, height and weight to analyze whether the fetus has any genetic problems, and the accuracy of non-invasive DNA can reach 99%. If the non-invasive DNA cannot be passed, an amniocentesis test will be required to determine this.