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 ...

Chorionic villus sampling (CVS) is a prenatal test used to detect birth defects, genetic diseases, and other problems during pregnancy. During the test, a small sample of cells (called chorionic villi ...

Clinical use of amniocentesis (AC) and fetal chromosome analysis was introduced in Denmark in the early seventies. Up to 1978, the number of prenatal diagnoses (PND) carried out was limited and AC ...