Chorionic Villus Sampling

Chronic villus sampling, or CVS, is a diagnostic test to screen for chromosome abnormalities and inherited disorders by analyzing the chorionic villi cells from the placenta. The placenta cells are collected either transcervically, using an ultrasound guided catheter inserted through the cervix to gently suction the cells, or transabdominally, through a long thin needle inserted into the placenta through the abdomen.

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