Chorionic villus sampling or CVS DNA test is a prenatal DNA test that is usually done to look out for genetic or other types of diseases that the child might be at risk of. To perform this test the doctor obtains a sample of tissue from the placenta and then performs the test on that tissue to create a detailed report on the health of the unborn child.
There are two types of methods that doctors use to obtain the sample tissue from the placenta which are the following:
- In transcervical CVS a catheter is inserted through the cervix to obtain the sample from the placenta.
- CVS procedure contains the following steps:
- The first step includes the insertion of the speculum inside the vagina so that they can see your cervix.
- With the help of an ultrasound, a tube will be sent inside the cervix to the placenta.
- After that, the cells from the placenta are gently removed into a syringe. Many samples are needed to obtain enough for the CVS DNA test.
- The tube is then removed gently.
- During this procedure, the doctors sterilize your abdominal area for the procedure.
- Then the doctor injects a small amount of anesthetic to numb that part of the skin.
- Then with the help of ultrasound, the doctor guides a long, thin, and hollow needle through the abdomen and into the uterus, and then the placenta.
- The cells are then obtained in the syringe and the insertion site is secured with an adhesive bandage.
- After the doctor obtains the sample the tissue is sent for the test CVS testing and the results you get a complete report on your child’s health.
If you are looking for other types of DNA testing like non-invasive prenatal DNA testing you search for “DNA testing centers near me” this will lead you to some of our testing center locations like the Dallas DNA testing center.