Patient's question:
The specific time for the Down syndrome screening test is in which monthDoctor's answer:
A Down syndrome screening is a method that involves drawing pregnant women's blood serum, detecting the concentration of alpha-fetoprotein and human chorionic gonadotropin in the maternal serum, and calculating the risk coefficient of giving birth to a child with Down syndrome by combining the pregnant woman's estimated due date, age, weight, and gestational age at the time of blood collection. The optimal time for screening is between the 15th and 20th weeks of pregnancy.