New blood test could replace risky amniocentesis for down syndrome detection

This study tested a new, non-invasive blood test to diagnose Down syndrome (trisomy 21) during pregnancy. Current screening methods have high false-positive rates, and the only way to confirm a diagnosis is through invasive procedures like amniocentesis, which carry a 1-3% risk of miscarriage. The new method analyzes fetal cells from a mother's blood sample, aiming to provide a safe and accurate alternative. The study involved 150 pregnant women at high risk for trisomy 21.