The Double Marker Test is a vital prenatal screening recommended during the first trimester of pregnancy to assess the risk of chromosomal abnormalities in the developing baby. Performed between the 11th and 14th week of pregnancy, this test measures two key blood components in the mother’s body — Free Beta hCG (human chorionic gonadotropin) and PAPP-A (pregnancy-associated plasma pro... https://redcliffelabs.com/double-marker-test