Patient's question:
The result I received today is: gestational age 17 weeks 4 days, risk rate for Down syndrome 1/197, normal is 1/250. The doctor asked me to go to the Maternal and Child Health Hospital for a re-examination. After coming home, I remembered that a few weeks ago my BC showed that the gestational age had always been two weeks less than expected, meaning it wasn't the 17 weeks 4 days the doctor mentioned, but only 15 weeks 4 days. Could this affect the result?Doctor's answer:
Analysis of the condition: Hello! Down syndrome screening involves drawing a blood sample from the pregnant woman to measure the levels of alpha-fetoprotein and human chorionic gonadotropin in the maternal serum. This is then combined with the pregnant woman's due date, age, weight, and gestational age at the time of blood collection to calculate the risk factor for giving birth to a child with Down syndrome. Therefore, the results are related to gestational age, age, weight, and other factors.Advice: Your current test results indicate a high risk. It is recommended to undergo a follow-up test and discuss the situation clearly with your doctor. If the follow-up test still shows a high risk, do not panic. Down syndrome screening results are only a matter of probability, with an accuracy rate of only 65%. A high-risk result does not necessarily mean the child has a problem. It is generally best to undergo amniocentesis to rule it out. Wishing you a healthy and lovely baby!