The Double Marker Test is a prenatal screening test performed during the first trimester of pregnancy to assess the risk of chromosomal abnormalities such as Down syndrome (Trisomy 21) and Edwards syndrome (Trisomy 18) in the developing baby. It measures levels of free Beta-hCG and PAPP-A in the mother’s blood, combined with ultrasound findings, to provide a risk assessment. This test... https://redcliffelabs.com/double-marker-test