Chorionic Villus Sampling (CVS)
What is Chorionic Villus Sampling (CVS)?
CVS is a procedure by which a sample of chorionic villi is taken from the placenta for testing. The chorionic villi are thin projections of placental tissue at the base of the placenta. The test can be done as early as 11-14 weeks of pregnancy and can help to detect chromosomal anomalies and genetic problems in the baby.
A prenatal procedure in which, an LP needle is used to collect a sample of chorionic villous cells aspirated from the placenta, under local anaesthesia. The cells are then examined for generic disorders or chromosomal abnormality
A “High-risk” for Down’s syndrome on screening tests
Ultrasound findings (increased Nuchal translucency, absent nasal bone, structural abnormality)
To rule out known hereditary genetic disorders like beta-thalassemia, sickle cell disease, spinal muscular atrophy