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 ...

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 ...

In its early life, the placenta is called a chorion because it is formed from the chorionic villi - finger-like growths which develop on the fertilised egg to help it implant in the wall of the uterus ...

A study of more than 64,000 pregnant women has found that miscarriage rates following amniocentesis and chorionic villus sampling were 1.4 percent and 1.9 percent, respectively. The research also ...

Three months into her pregnancy, the woman in my office worried that her fetus might have Down syndrome. She wanted a definitive diagnosis, so I referred her to a doctor who inserted a 3 1/2-inch ...

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 ...