Patient's question:
Project Name Result MOM value Free-hCG 41.202.32 hAFP 29.200.69 NTD Risk Screening Negative Trisomy 21 Risk 1/320 Trisomy Risk 1/44500Doctor's answer:
Amniocentesis is usually performed between the 16th and 20th weeks of pregnancy, as this is when the amount of amniotic fluid is relatively high (approximately 200-400 milliliters). This not only makes it easier to collect without causing fetal injury but also ensures a high survival rate of fetal cells after culture, facilitating further in-depth examination. If the puncture is performed too early, due to the limited amount of amniotic fluid in the pregnant woman, it may have a negative impact on the fetus. If it is delayed, the survival rate of the cells will be low, making it less favorable for detailed analysis. Generally, there is little risk, and it does not lead to miscarriage.