F2 and vasculitis: Afterwards the coagulation markers (prothrombin time (PT), international normalized ratio (INR), activated partial thromboplastin time (APTT), fibrinogen (FIB), fibrin degradation products (FDP), and prothrombin activity (PTA)), renal function (estimated glomerular filtration rate (eGFR)), and disease activity (Birmingham Vasculitis Activity Score (BVAS)) were assessed.