Patient's question:
How to interpret the results of the Down syndrome screeningDoctor's answer:
The MoM value is a ratio, which is the measured value of the marker in the pregnant woman's body divided by the median value of normal pregnant women at the same gestational age. This ratio is the MoM. Pregnant women carrying a fetus with Down syndrome have a serum AFP level of 70% of that of normal pregnant women, meaning the average MoM value is 0.7-0.8 MoM. If the blood test screening value is greater than 1/270, the pregnant woman is considered high-risk. The normal value is around 1/700. Amniocentesis can be performed to determine if the fetus is a Down syndrome child. However, the specific method still needs to be chosen based on the doctor's advice and personal circumstances.