TPO and autoimmune thrombocytopenic purpura: Patients of all groups had significantly higher resting cytosolic calcium level (Fig. 4A, Bleeding 0: 15.4 ± 5.8 nM, bleeding 1: 14.2 ± 6.5 nM, bleeding 2: 12.3 ± 5.6 nM; acute and persistent: 13.8 ± 6.4 nM, chronic: 14.2 ± 5.9 nM, ITP on romiplostim (TPO): 14.8 ± 4.1 nM) than healthy donors (8.0 ± 4.7 nM).