What Does a 1 in 15 High Risk Value for 21-TRISOMY Screening Mean?

A high risk value of 1 in 15 in the 21-trisomy screening indicates that there is a 1 in 15 chance of having a child with Down syndrome. This screening result suggests a higher likelihood of the baby having Down syndrome. The specific risk value calculation considers various factors, including the pregnant woman’s age, weight, gestational age, and levels of serum markers (such as AFP and HCG). If the screening result indicates a high risk, it is usually recommended to undergo amniocentesis or other more accurate diagnostic tests to determine the presence of 21-trisomy syndrome or other chromosomal abnormalities.
One minute to read