Ask An OB.com is the premier website for medical information in pregnancy. If you are considering invasive testing, such as amniocentesis or CVS, get the lastest information on risks, pros and cons of amniocentesis and CVS.
The accuracy of CVS testing for detection of Down syndrome seems to be comparable to the accuracy of amniocentesis. The analysis of the structure of the individual chromosomes is not quite as detailed with CVS as it is with amniocentesis
Questions and answers about the CVS test. Questions addressed included the risks compared to amniocentesis, how it is performed, and what happens after the test.
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