What is a CVS test?
The chorionic villi are part of the developing placenta (afterbirth). A CVS test involves taking a tiny sample of the chorionic villi to perform a genetic test during pregnancy. It is most commonly used to check the baby genes or chromosomes for specific genetic conditions. It may be offered to you for a number of reasons. • You or your partner has a genetic condition which may be passed on to the baby. • There is a genetic condition in your or your partner family, and there is a risk that the condition may be passed on to the baby. • You have had a previous child affected by a genetic condition. • You have had another type of test that is done during pregnancy (such as an ultrasound, nuchal translucency scan or blood test). It has shown that there is an increased risk that your baby has a genetic condition.