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Invasive Antenatal Tests Home > Services We Offer
Invasive antenatal tests such as amniocentesis, chorionic villous sampling (cvs) and fetal blood sampling are able to detect fetal abnormalities especially chromosomal abnormalities such as Down's syndrome. Where a genetic disorder is known, such as in Thalassaemia (inherited blood disorder), a gene probe for the defect is used to test for the condition in the baby.
Since these tests are "invasive" (involves sampling with a needle or small cannula/tubing) there is a procedure-related risk of miscarriage between 0.5 to 1%. At FMGC, a recent audit (2006) showed that the risk of miscarriage is 1 in 300 (or 0.3%) for amniocentesis and 1 in 100 (or 1%) for cvs.
TIMELINE FOR INVASIVE PROCEDURES