Patient's question:
What is the prenatal screening for Down syndrome?Doctor's answer:
Analysis of the condition: Hello, the name "Down syndrome screening" implies that it is a prenatal test to screen for Down syndrome in fetuses. Experts explain that by drawing and testing the mother's blood, it serves as an important indicator for screening trisomy 21 syndrome in the fetus. The screening results can determine whether the fetus has congenital intellectual disabilities and the risk level of the fetus suffering from Down syndrome. If the screening results are high-risk, further diagnostic tests such as amniocentesis are required.Advice: Generally, the optimal time for Down syndrome screening is between weeks 15 and 20 of pregnancy. There is no need to fast before the screening; it only involves drawing blood from the mother's peripheral veins. Down syndrome screening is related to the menstrual cycle, weight, height, accurate gestational period, and age.