Down screening refers to Down’s syndrome screening, nine out of ten pregnant women are screened for Down’s syndrome, high risk is not true, and there is no scientific basis for this statement.
In addition, the results of Down’s syndrome screening high-risk and the age of the pregnant woman has a certain relationship, generally the older the pregnant woman, the higher the chances that the results of Down’s syndrome screening for high-risk.
Down’s syndrome screening is recommended at 16 to 20 weeks of pregnancy, but the accuracy of the test is not as high as that of non-invasive DNA or amniocentesis.
If the Down’s screening test shows high risk, non-invasive DNA test is recommended to determine whether the fetus has a congenital disease. And amniocentesis is needed for those who have abnormal noninvasive DNA test.
After checking the high risk of Down’s screening test, it is recommended to proceed to the next screening program under the guidance of the doctor.