Question
Hello! My last menstrual period was around January 20th (memory is a bit hazy). May 16th, which is 16 weeks and 4 days from January 20th, should be the time when I am pregnant. On that day, I underwent a Down Syndrome screening without having an ultrasound to confirm the actual gestational age of the fetus. The Down Syndrome screening result showed a risk of trisomy 21 syndrome at 1 in 700. The fetus has already started to move. Should I proceed with an amniocentesis?
Answer
Case Analysis: Generally, a risk value over 1 in 270 is considered high risk. Based on the provided test data, the risk value is close to the low-risk group, indicating a lower chance of the fetus having the condition. Recommendation: Since the risk value is close to the low-risk group, further testing is not necessary. Please note that supplementing with calcium in the second trimester is important.