Chorionic Villus Sampling
(CVS)

Alternate Names

  • Chorionic Villus Biopsy (CVB)

Between 8 to 12 weeks gestation, a small piece of tissue is removed from the villi (small folds of tissue containing blood vessels), and grown as a culture in the lab. Chorionic villi cells grow more easily and quicker than the cells that are obtained through amniocentesis, and the test can be done earlier than amniocentesis. The cells are then examined and the results are used to diagnose inherited diseases and disorders affecting normal body chemistry.

Test results can take up to three weeks to return from the lab.

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