How Is Idiopathic Thrombocytopenic Purpura Diagnosed?
Your doctor will diagnose idiopathic thrombocytopenic purpura (ITP) based on your medical history, a physical exam, and test results. Your doctor will want to make sure that your low platelet count isn’t due to another condition (such as an infection) or a side effect of medicines you’re taking (such as chemotherapy medicines or aspirin).