Do you have to do an ultrasound for the Down syndrome screening?

Patient's question:

No

Doctor's answer:

Analysis of the condition: Hello, the Down syndrome screening does not require an ultrasound.
Suggestions: Down syndrome screening is a test that involves drawing pregnant women's blood to measure the levels of alpha-fetoprotein, human chorionic gonadotropin, and free estriol in maternal serum. It also considers factors such as the pregnant woman's due date, weight, age, and gestational age at the time of blood collection to calculate the risk coefficient of giving birth to a fetus with congenital defects. Therefore, it is a blood test, not an ultrasound, so there is no need to worry.