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Chorionic Villus Sampling (CVS)

  • Chorionic Villus Sampling (CVS)
    This is another test, which can determine chromosomal abnormalities and genetic defects in the foetus. Chorionic villus sampling (CVS) is done on Chorionic villi that are small units that form the placenta and have similar chromosomal structure as that of the foetus.

    This test is an up-gradation for Amniocentesis as it takes some chorionic villi from the placenta and tests them for genetic makeup and chromosomes. It also takes into consideration the family history and genetic problems in the family. However, this test does not provide insight into neural tube defects and thus a blood test for the same is needed.

    This test is not advised to women with twins of multiple placentas as the complexity of drawing tissue is increased. There are certain risks like prematurity, early labour, infections, spotting and even chances of miscarriage associated with this test.
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