Chorionic Villus Sampling (CVS) is a prenatal test used to detect genetic abnormalities in a developing fetus. It involves taking a small sample of tissue from the chorionic villi, which are tiny finger-like projections in the placenta. This procedure is typically performed between the 10th and 13th weeks of pregnancy and can provide early information about conditions such as Down syndrome and other genetic disorders. The sample can be collected through the cervix (transcervical) or through the abdomen (transabdominal). CVS is generally safe, but like any medical procedure, it carries some risks, including miscarriage. Results are usually available within a week, helping parents make informed decisions about their pregnancy.