age (maternal age above 35). AMA is associated with increase risk of Down's syndrome and at age 35, risk is 1:400. Screening tests are usually carried out first before deciding if CVS should be done.

Risks

The risk of miscarriage in CVS is estimated to be potentially as high as 1-2%. However some recent research has suggested that only a very small number of miscarriages that occur after CVS are a direct result of the procedure. Apart from a risk of miscarriage, there is a risk of infection

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