Prenatal tests are performed to detect abnormal conditions or diagnose disease in the fetus before it is born. These tests are intended to find out traits or characteristics of fetus that may have an adverse effect or threaten the pregnancy. Moreover, some parents are at increased risk of having a baby with certain problems and may like to go in for prenatal tests to know about them before the baby is born. It can help parents make decision about health care for their infant as some of the problem are manageable before birth while others can be administered special attention right after delivery. Again having information in advance would prepare healthcare staff better, and parents for delivery of a child with health problem or for the likelihood of a stillbirth.