Hi, everybody! I am Melanie Raposo and welcome to Mommy's Minute. Some concerns surrounding maternal screening tests are false results. These are tests that indicated defect is present in a fetus when there really isn't. Only 1 in 50 women with abnormally high AFG levels will have an affected fetus. Other reasons for abnormal results, include carrying twins, if the fetus is a few weeks older or younger than originally thought or if the test was performed wrong. To learn more about the different types of maternal screening tests, visit www.ThePregnancyShow.com.