Method:
This study was a single-center prospective observational study that analyzed children with newly diagnosed ITP and platelet count of less than 10×109/L from June 2018 to September 2021 in our Hospital. They were classified into mild-moderate and severe groups based on the treatments. Platelet-specific antibodies and titers were detected using a kit, PAKAUTO. We analyzed the relationship of bleeding severities with platelet-specific antibodies/titers.