A single abnormal mom value usually refers to an abnormality in one of the Down’s screening tests and usually represents a multiple of the median value.
In general, a single abnormal mom value is not enough to determine fetal abnormality, and a combination of other Down’s test results is needed to make a comprehensive judgment.
If there are other abnormalities at the same time, there may be fetal malformations, and then the pregnant woman should take further non-invasive DNA test or amniocentesis to determine whether there are fetal malformations.
In addition, according to the severity of fetal malformation and the physical condition of the pregnant woman and other factors, comprehensive consideration should be made to choose the appropriate treatment plan.