The Double Marker Test is an important prenatal screening test recommended during pregnancy to assess the risk of chromosomal abnormalities in the developing baby. Usually performed between the 11th and 14th week of pregnancy, this test measures the levels of two key markers in the mother’s blood — Free Beta hCG (human chorionic gonadotropin) and PAPP-A (pregnancy-associated plasma pr... https://redcliffelabs.com/double-marker-test