Question
A few days ago, I received my Down Syndrome screening report, but the doctor said that the level of Trisomy 18 was high, my ratio was 1:140, and the risk threshold for Trisomy 18 is 1:350. The doctor recommended that I consult a genetic counselor and undergo prenatal diagnosis, but I am already 18 weeks pregnant.
Answer
Condition Analysis: High levels in the Trisomy 18 screening suggest a greater likelihood of the fetus having Down Syndrome, and amniocentesis should be considered. It’s not too late at 18 weeks of pregnancy to undergo genetic counseling and amniocentesis. Guidance: Currently, amniocentesis is performed under ultrasound guidance, unlike the past “blind procedure,” which poses no risk to the fetus. The process is similar to a muscle injection, so there is no need to be overly concerned.