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What is the Difference Between Chorionic Villus Sampling (CVS) and Amniocentesis?

April 26, 2017Amniocentesis chorionic CVS difference Sampling villus

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What is the Difference Between Chorionic Villus Sampling (CVS) and Amniocentesis?

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CVS is a test in which a few cells are taken from the place where the placenta meets the uterus. It is done between the 10th and 12th week of pregnancy. CVS helps doctors find genetic problems earlier than amniocentesis, but the test has a higher risk of miscarriage. It is a newer test than amniocentesis, so it isn’t offered in all areas. Also, CVS does not test for neural tube defects such as spina bifida. If you have more questions about amniocentesis, contact your prenatal care provider. This article is for informational purposes only, and does not replace the advice of a doctor or certified nurse midwife. Click here for a printer friendly version of this document.