Although present in these foods, it is often difficult to obtain enough folic acid from diet alone. NTDs occur 25 to 29 days after conception, before many women even realize they are pregnant. Women who are pregnant or breastfeeding need more folic acid. For this reason, it may be beneficial to continue folic acid supplements throughout pregnancy, even though crucial development of the spine and brain is completed five weeks after conception. If you are not certain which dose you need, contact your physician.
All pregnant women can have tests to detect of NTDs in the second trimester of pregnancy.
This test is usually performed between 16 and 18 weeks of pregnancy. An ultrasound examination of the baby's head and spine. This is usually done between 17 and 20 weeks of pregnancy. These tests are not harmful to the baby and will detect the majority of babies with NTDs. You should discuss these test options with your physician.