What is alpha-fetoprotein screening?
Alpha-fetoprotein screening is a blood test for pregnant women. It can be used to look for a problem in the baby’s spine or certain other conditions, such as some chromosome problems. The test measures the level of a protein called alpha-fetoprotein (AFP) in your blood. AFP is produced by your unborn baby’s liver. Some AFP passes from the baby into your bloodstream. If a baby has certain problems, the level of AFP may be abnormally high or low. Sometimes, however, the AFP level is abnormal when the baby has no problems. Because the test is not completely accurate, your health care provider will usually order other tests if the AFP levels are high or low.
