Quadruple Marker Maternal Screening

The Quadruple Marker Test, also known as the Quad Screen, is a vital prenatal blood test typically performed between the 15th and 22nd weeks of pregnancy. It serves as a non-invasive screening tool to assess the probability of specific chromosomal abnormalities and neural tube defects in the developing fetus. Rather than providing a definitive diagnosis, the test evaluates four specific biomarkers in the maternal blood to determine if further diagnostic testing—such as an amniocentesis—is warranted.