What is the primary purpose of multiple marker screening during pregnancy?

The primary purpose of multiple marker screening during pregnancy is to detect genetic disorders in the fetus. This type of screening typically involves measuring specific substances in the mother's blood, which can indicate the risk for certain chromosomal abnormalities, such as Down syndrome or neural tube defects. The markers included in these tests can provide valuable information about the potential for these conditions, guiding further diagnostic evaluation if needed. This screening is non-invasive and is usually performed in the first or second trimester, making it an important tool for prenatal care providers in assessing fetal health early in the pregnancy.