blog page Fetal Medicine

Know in Detail About the Chorionic Villus Sampling Test

A prenatal test, Chorionic Villus Sampling, also known as Chorionic Villus Biopsy, is done by taking a sample of the body tissue from the mother’s placenta, where it attaches to the uterus wall. The test identify genetic problems like chromosomal abnormalities and more. It detects any issues or diseases during birth.  Usually done between the 10th and 12th week of pregnancy, get it done from the center for Chorionic Villus Sampling Test in Kolkata.

The chorionic villi have the same genetic material as the fetus. The placenta is the structure that gives blood and nutrients to the fetus, taking it from the mother’s body.  Some women do a follow-up blood test between 16 to18 weeks to screen for defects in the neural tube.

Types of CVS Procedure

Transcervical procedure– The catheter is inserted inside the placenta through the cervix to get samples of tissues

Transabdominal process–  The doctors insert a needle through the abdomen and the uterus into the placenta to get tissue samples.

Detection of Problems

The CVS test correctly identifies chromosomal difficulties like Down Syndrome and genetic diseases like cystic fibrosis. Doctors detect other conditions like Sickle Cell Anemia or Tay Sachs disease. The doctors consider this test 98% effective to identify the sex of the baby, further detecting other disorders like muscular dystrophy.

Benefits of the Test

While deciding to take the prenatal test is very personal, it has its advantages.

Accuracy: Unlike the screening processes, CVS is a diagnostic whose results are accurate. Whatever the reports are, know that they will always be correct compared to any other system.

Timings: It is done mostly during the first trimester of the pregnancy. Until this time, the mother can research about her condition in detail.

Management: The test reveals if the baby has any genetic conditions. This can have an impact on the mother’s decision to continue the pregnancy. For some women, this becomes difficult otherwise.

Risks of the Test

One of the bigger risks associated with this test is a miscarriage. The possibilities are less since the doctors interpret it via a statistical lens. This will always reassure you about the test and its safety. Other few risks are infection and Rh Sensitization, which is normal. Also, the 1% chance of getting a false positive with CVS remains.

CVS is safe and reliable; if you get it done from good medical institutes like IFM Kolkata, Studies reveal that the chances of a miscarriage are only 0.22%. Hence, it is no risk at all. You can also ask the doctor about it and assess their skill and experience accordingly.