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What are the risks of chorionic villus sampling (CVS)?

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CVS may carry a slightly higher risk of miscarriage than amniocentesis, because it’s done in early pregnancy. Infection may also happen. Rare cases of defects in a baby's fingers or toes have been reported, especially when CVS was done before 9 weeks. This risk seems unrelated to the doctor’s experience or how the test was done. Due to this potential risk, 10 weeks is generally the earliest recommended time to have this test.

From: Pregnancy and Chorionic Villus Sampling WebMD Medical Reference

Reviewed by Trina Pagano on September 20, 2018

Medically Reviewed on 09/20/2018

SOURCE: March of Dimes web site.
 

Reviewed by Trina Pagano on September 20, 2018

SOURCE: March of Dimes web site.
 

Reviewed by Trina Pagano on September 20, 2018

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Who should be tested with chorionic villus sampling (CVS)?

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