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Fertility Glossary

Chorionic villus sampling

A placental sample for genetic diagnosis, usually at 11 to 14 weeks.

Genetics

CVS gives diagnostic results earlier than amniocentesis, with a small procedure-related risk. It is used where an early definitive answer is important, such as after a known inherited condition or an abnormal screening result.

Also known as: CVS, placental biopsy

Sources

  • Society of Obstetricians and Gynaecologists of Canada (SOGC) patient information

Last reviewed: September 9, 2026. Written by the Antega Editorial Team. General information only โ€” always follow the advice of your own clinic, doctor or pharmacist.

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