The Quadruple Marker Test, often simply referred to as the “Quad Test,” is designed to evaluate the probability of chromosomal abnormalities in a fetus. It measures the levels of four distinct substances in a pregnant woman’s blood: Alpha-fetoprotein (AFP), human chorionic gonadotropin (hCG), unconjugated Estriol (uE3), and Inhibin A. These substances, produced either by the […]