Chorionic villus sampling (CVS) is a test carried out during pregnancy to detect specific abnormalities in an unborn baby. A sample of cells is taken from the placenta (the organ that links the mother’s blood supply with her unborn baby’s) and tested for genetic defects.
CVS increases the risk of miscarriage, but only 1 in every 100 pregnancies that end in miscarriage would be directly due to CVS. This risk is in addition to the ‘background risk’ of miscarriage that all women have in early pregnancy due to natural causes. It is important to discuss your risk of miscarriage with your doctor, midwife or genetic counsellor.
You may have some vaginal bleeding after a CVS. Talk to your doctor about what you can expect after the testing and what symptoms to look out for.
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