Breakthrough blood test could replace risky needle tests for pregnant women

This study tested a new, non-invasive blood test for pregnant women to detect Down syndrome (trisomy 21) in the first trimester. The goal was to see if analyzing fetal DNA found in the mother's blood could accurately identify the condition, providing a safer alternative to invasive procedures like amniocentesis, which carry a small risk of miscarriage. The research involved 976 women who were already considered at higher risk for having a baby with Down syndrome.