Simple blood test could replace risky needle for down syndrome detection

This study tested whether a blood test from the mother could accurately detect Down syndrome (trisomy 21) in the baby as early as 11 weeks into pregnancy. Researchers analyzed fetal DNA found in the mother's blood using a high-speed sequencing method. The goal was to see if this noninvasive test could reliably replace invasive procedures like amniocentesis, which carry a small risk of miscarriage. The study involved 976 pregnant women at high risk for Down syndrome.