Blood tests for chromosomal conditions (non-invasive)
Prenatal screening tests can identify if your baby is higher risk for a structural or genetic concern. These tests are not invasive (therefore do not place your pregnancy at risk) and can include a combination of a blood test (prenatal cell-free DNA screening) and a detailed ultrasound (looking for genetic markers). However, prenatal screening tests are limited and do not provide a definitive, clear diagnosis. If a screening result points to an increased risk for a genetic disorder or structural difference, you may decide you would like a definitive test to confirm the diagnosis.