The Double Marker Test is an essential and empowering part of your first-trimester prenatal care. It is a screening test, not a diagnostic one. It combines two key blood markers (Free Beta-HCG and PAPP-A) with your age and a nuchal translucency (NT) ultrasound to provide a clear, personalized risk assessment for chromosomal conditions like Down syndrome. A simple blood draw is all that is required. This safe, simple blood test gives you vital, early information, empowering you and your doctor to make the best decisions for your pregnancy.