Question
What does it mean when the Down Syndrome risk score is OSB1;236/?
Answer
A Down Syndrome risk score of OSB1;236/ indicates a high-risk screening result for Down Syndrome. This value is calculated by testing the levels of alpha-fetoprotein (AFP) and human chorionic gonadotropin (hCG) in the pregnant woman’s serum, combined with her age, weight, and gestational age. Down Syndrome, also known as trisomy 21, is a series of developmental abnormalities and intellectual disabilities caused by an extra copy of the 21st chromosome in a baby. Generally, a risk score above 1/275 is considered high risk, necessitating further diagnostic tests such as amniocentesis or chorionic villus sampling to determine if the fetus has Down Syndrome.