Definitions for "Chorionic villi sampling"
A method of prenatal testing in which fetal cells from the fetal side of the placenta (chorionic villi) are extracted and analyzed for chromosomal and biochemical defects.
Chorionic villi sampling is a method of prenatal diagnosis in which a small piece of fetal placenta, or chorionic villi, is removed early in pregnancy for genetic testing.
An invasive prenatal test that looks for genetic abnormalities by sampling a piece of the placenta. Usually done at 10 to 12 weeks' gestation.