Prenatal testing is an important part of your pregnancy health care. Prenatal tests can reassure you that your baby is developing normally, that your pregnancy is progressing well, and that you remain in good health through the pregnancy. Prenatal tests are also important because they can isolate problems, such as birth defects, or determine when a baby is not thriving in the uterus. There are a wide variety of tests available. It is important to discuss available testing with your healthcare provider to determine which tests are recommended for you.