Unlike prenatal screening tests, diagnostic tests are used to confirm the existence of a disorder. The prenatal diagnostic tests include both invasive and non-invasive procedures. In the case of invasive prenatal tests, there is a small risk of miscarriage.
There are two main diagnostic tests: Amniocentesis, and Chorionic Villus Sampling (CVS). Look below for getting detailed information on both prenatal testing:
Amniocentesis is usually done between the 16th and 20th weeks of pregnancy. Though it can be performed up until you give birth, but this prenatal test is not recommended before the 15th week because of various risks, including miscarriage.
In amniocentesis testing, amniotic fluid is removed from the uterus with the help of a thin needle which is guided through the mother’s abdominal wall. This fluid is a pale, yellow liquid that surrounds and protects your unborn baby during a pregnancy period. In this fluid, there are cells that contain important information about your baby’s health. The information includes whether your baby has any specific genetic condition such as Down syndrome, Muscular dystrophy, Tay-Sachs, or Sickle cell disease.
- Chorionic Villus Sampling
This prenatal diagnostic test is performed between the 10th and 13th weeks of the gestation period. In this procedure, a needle is inserted through the abdomen, or through the cervix by using the small catheter. A small amount of tissue is removed from the placenta and then is sent to the lab for checking various chromosomal problems such as Down syndrome or other genetic diseases such as Cystic fibrosis, and Tay-Sachs disease. You can also choose CVS DNA Paternity test services of Face IT DNA for determining the paternity.
You can take the help of DNA testing Austin professionals for getting prenatal DNA testing and also other testing such as Paternity, Immigrations, Forensics, Ancestry, and many others.