The Double Marker Test is a crucial prenatal screening performed during the first trimester of pregnancy (between 11 to 14 weeks) to assess the risk of chromosomal abnormalities in the fetus. It measures two key markers in the mother’s blood—free Beta-hCG (human chorionic gonadotropin) and PAPP-A (Pregnancy-Associated Plasma Protein-A). Abnormal levels may indicate an increased risk o... https://redcliffelabs.com/double-marker-test