Patient's question:
Prenatal serum screening: AFP: 31.21 U/mL 0.75 MOMFREE-B-HCG: 34.01 ng/mL 2.94 MOM
Risk value for Down syndrome: 1/262
Open neural tube defects: 0.75
Maternal age risk value: 20.75
Doctor's answer:
Hello! Prenatal screening, such as the Down syndrome screening, is just a pre-pregnancy genetic health check. It involves calculating a risk coefficient by combining factors like the pregnant woman's blood test results, gestational age, weight, and more. Your test results indicate a high risk, so you should undergo an amniocentesis. 3D ultrasound is indeed necessary, and it should be done between 22-26 weeks of pregnancy. It can help assess the fetal growth and development, as well as detect any significant external abnormalities in the fetus.