A protein normally produced by a fetus. Alpha-fetoprotein levels are usually undetectable in the blood of healthy adult men or women (who are not pregnant). An elevated level of alpha-fetoprotein suggests the presence of either a primary liver cancer or germ cell tumor. Also called AFP.
Last updated: 2014-04-23
Source: The National Cancer Institute's Dictionary of Cancer Terms (http://www.cancer.gov/dictionary)