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 ...

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 ...

The risk of miscarriage after undergoing chorionic villus sampling, or CVS, to detect birth defects is lower than previously thought and essentially carries the same risk as the more commonly used ...

Both tests can tell whether there are genetic defects in a developing baby, although nothing can be done to correct those defects. The decision to offer the tests to women beginning at age 35 is ...