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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.
Genetic testing is an option for any woman before or during pregnancy. Sometimes the baby's father gets tested, too. Your doctor may suggest genetic testing if family history puts your baby at a higher risk of inherited diseases.