< Back to All Videos thirdAGE > Chorionic Villus Sampling Up Next... 10 Fetal Development: Month 06 Fetal Development: Month 06 Fetal Development: Month 07 Fetal Development: Month 08 Loading the player ... Pregnancy Chorionic Villus Sampling Chorionic villus sampling or CVS is a prenatal test, which is used to diagnose certain birth defects and genetic abnormalities in your baby. Find out when this test is done, and what the risks and benefits are. Related Videos Fetal Development: Month 06 Fetal Development: Month 07 Fetal Development: Month 08 Fetal Development: Month 09