This test is usually offered to women who are considered high risk for having babies with genetic disorders such as cystic fibrosis or chromosomal abnormalities. A sample of the cells that line the ...

NEW YORK (Reuters Health) - Testing for genetic defects early in pregnancy through chorionic villus sampling, or CVS, does not appear to raise the risk of fetal loss. CVS involves using a needle to ...

CVS is done when there is evidence an unborn baby may have a genetic abnormality, like Down’s syndrome. The outer reaches of the baby’s placenta, where it fuses with the mother (chorionic villi) are ...

Chorionic villus sampling is a prenatal diagnostic test performed for prenatal genetic testing involving a biopsy of placental tissue between 10 to 13 weeks gestation. The tissue harvested is the ...