When is chorionic villus sampling offered?
CVS is usually offered: • if a screening test has suggested an increased chance of Down’s syndrome • for women over 35 who missed the initial screening test, as the risk of the baby having a genetic disorder increases after this age • for women who have a history in their family of babies being born with certain conditions, such as Down’s syndrome • if there is a possibility of a genetic disorder, for example women who have, or whose partner has, an inherited condition • if you, your partner, or both of you are carriers of a gender-specific disease such as haemophilia or Duchenne muscular dystrophy (both of these are more likely to occur in boys)
