Prenatal screening is a non-invasive test that usually involves an ultrasound measurement and a blood test from mom that helps detect genetic disorders. These include diseases such as Down’s syndrome, cleft lip and palate, spina bifida or neural tube defects. Not all problems in pregnancy can be seen on ultrasound. This test does not tell us whether or not your baby has any of these disorders, but instead gives you a risk level based on the blood levels and other factors such as your gestational age and weight. It is used to help guide your care. For example, if any problems are detected, more frequent monitoring and referrals to specialists may be needed. Patients over the age of 35 and those less than the age of 16 are at increased risk of genetic disorders, and this test is especially recommended to these age groups.