Down Syndrome screening at London Ultrasound Centre

CVS is short for chorionic villus sampling. It is a test to check for abnormal chromosomes in your baby. The aim of a CVS is to check your unborn baby for any abnormal chromosomes or inherited conditions. The test is 98% accurate. During the test a small sample is removed from placenta. The test is guided by ultrasound. The sample is send to the laboratory for examination. We can do this test from as early as 11 weeks gestation. It is not advised before 11 weeks. An amniocentesis is another test for abnormal chromosomes. In this test we take a sample of the amniotic fluid surrounding your developing baby. This test can be done after 16 weeks gestation.