THPO and autoimmune thrombocytopenic purpura: The Chinese ITP guidelines also list specialized laboratory assays that include the detection of anti-GP autoantibodies by monoclonal antibody-specific immobilization of platelet antigen (MAIPA) [73] or flow cytometric immunobead array, serum thrombopoietin levels, Helicobacter pylori infection, direct antiglobulin test (DAT), and the quantification of parvovirus, Epstein–Barr virus, and cytomegalovirus deoxyribonucleic acid (DNA).