ABSTRACT: Prenatal testing for chromosomal abnormalities is designed to provide an accurate assessment of a patient’s risk of carrying a fetus with a chromosomal disorder. A wide variety of prenatal screening and diagnostic tests are available; each off

Prenatal cell-free DNA (cfDNA) screening, also known as noninvasive prenatal screening, is a method to screen for certain chromosomal abnormalities in a fetus. During prenatal cell-free DNA screening, DNA from the mother and fetus is extracted from a mate

Have an abnormal triple screen test result; Substances in the fluid may suggest certain genetic defects. It takes one to two weeks to get the results on chromosomal abnormalities. Other results are usually ready the next day. Chorionic Villus Sampling (CV