Patient's question:
The doctor wants to go to the hospital for a Down syndrome screening. Hello, doctor, how many months pregnant can you do a Down syndrome screening?Doctor's answer:
Early prenatal screening is generally performed between 11 weeks and 13 weeks and 6 days, while mid-prenatal screening is typically done between 15 weeks and 20 weeks. Both early and mid-prenatal screening are recommended. If there are no abnormalities, routine and thorough prenatal examinations are sufficient. If the results are high-risk, further examinations such as non-invasive DNA testing and amniocentesis are required to rule out fetal abnormalities. Between 22 and 26 weeks, a four-dimensional ultrasound or two-dimensional ultrasound should be performed to rule out fetal abnormalities.