Beta-2 glycoprotein 1 antibody is an autoantibody that is associated with inappropriate blood clotting. This test detects and measures one or more classes (IgG, IgM, or IgA) of beta-2 glycoprotein 1 antibodies.. Beta-2 glycoprotein 1 (beta-2 GP1, also called apolipoprotein H) is a 326-amino acid polypeptide synthesized by hepatocytes, endothelial cells and trophoblast cells.. Definition of beta 2-glycoprotein i in the Definitions.net dictionary. Meaning of beta 2-glycoprotein i. What does beta 2-glycoprotein i mean? Information and translations of beta 2-glycoprotein i in the most comprehensive dictionary definitions resource on the web.. Disclaimer. All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only.. Miyakis S(1), Giannakopoulos B, Krilis SA. Author information: (1)Department of Immunology, Allergy and Infectious Diseases, University of New South Wales, St. George Hospital, 2 South Street, Kogarah, NSW 2217, Australia. Beta-2 glycoprotein I (beta2GPI) is the principal target of autoantibodies in. Anti-beta-2-glycoprotein antibody is a type of anticardiolipin antibody that causes the antiphospholipid syndrome and deep vein thrombosis..