Chorionic villus sampling

What is chorionic villus sampling?

A chorionic villus sampling diagnostic test (CVS) is performed between 11-14 weeks of pregnancy.

What is the test for?

It is a test used to identity chromosomal abnormalities, including Down’s syndrome. It should determine whether your baby has an abnormal condition. How does the sampling work? Using ultrasound guidance, a sample of placental tissue is taken using a needle inserted through the abdominal wall or fine forceps through the cervix. The tissue collected is then tested for chromosomal abnormalities.

How long does the test last?

The test will usually last around ten minutes, though the entire consultation may be for 30 minutes or more.

When will I get the results?

Results are typically available within 2 to 3 working days. These results and their implications will be fully discussed with you.

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