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There are two basic types of DNA testing that can be done before delivery. These include amniocentesis and CVS, or Chorionic Villus Sampling. An amniocentesis is generally performed during the second trimester of pregnancy. Typically, it would take place between the 14th and the 20th week of pregnancy.
Non-invasive prenatal testing (NIPT) is a blood test done during pregnancy. This test measures. small bits of fetal DNA to check the developing baby for certain genetic conditions. DNA is the genetic information we inherit from our parents. DNA is present in most cells of the. body and is also found in blood.