Amniocentesis and chorionic villus sampling are two methods of prenatal diagnosis. One important difference between these techniques is that
◦ chorionic villus sampling is more routinely prescribed.
◦ amniocentesis can diagnose chromosome disorders, while chorionic villus sampling cannot.
◦ chorionic villus sampling can be performed earlier than amniocentesis.
◦ maternal risks are higher with chorionic villus sampling.
◦ the risk of miscarriage is higher with amniocentesis than with chorionic villus sampling.