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Chorionic Villi


Updated March 17, 2009

Chorionic Villi

Chorionic villus sampling is a prenatal test that can diagnose chromosome disorders as early as the late first trimester.

Image © A.D.A.M.

Chorionic villi are finger-like projections on the edge of the placenta that faces the uterine wall. The prenatal test known as chorionic villus sampling (CVS) involves taking a sample from the chorionic villi to analyze the developing baby's DNA.

Also Known As: chorionic villus (singular)
Common Misspellings: choronic villi, chronic villi
Related Video
How Does Chorionic Villus Sampling Work?

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