If you fail the Down’s syndrome screening, you have to continue to do prenatal checkups to clarify whether the baby has any problems, in order to see if there is any effect.
The Down’s syndrome test is mainly used to initially screen the fetus for chromosomal abnormalities, and to a certain extent, it can assist in determining whether the fetus is suffering from Down’s syndrome. However, the accuracy rate of Down’s syndrome test is around 70%, therefore, if the Down’s syndrome test fails, it does not necessarily mean that there are problems with the baby, and it is often necessary to take further tests, such as the non-invasive DNA test or the amniocentesis test directly.
Statistics show that the accuracy of non-invasive DNA test can be up to 90%, but there is still a certain degree of error. Amniocentesis is a test that takes fetal chromosomes to determine whether there are abnormalities in the fetus, with an accuracy rate of more than 99%, which is the standard for diagnosis. If the results show that there are indeed abnormalities in the development of the fetus, then you should decide on the basis of the severity of the abnormalities in the development of the fetus and decide on the basis of the advice of the doctor whether to continue with the pregnancy or not.
Risk factors for Down syndrome include advanced age of the mother, genetic factors, exposure to teratogenic substances, etc. If the mother fails the Down syndrome screening, she should consult a doctor for further examination under the guidance of a physician.