Fig. 3

Platelet autoantibodies levels of in ITP patients. Plasma samples from patients with newly-diagnosed (nITP), persistent and chronic ITP (pITP and cITP), non-ITP patients and healthy controls (HC) were assessed by the quantitative FCIA. Increased levels of autoantibodies against platelet GPIX, GPIb, GPIIIa, GPIIb and P-selectin were found in ITP patients compared to non-ITP patients or healthy controls. *p < 0.05 vs. persistent ITP of the same antibody group; ^†p < 0.05 vs. chronic ITP of the same antibody group; ^‡p < 0.01 vs. non-ITP of the same antibody group; ^#p < 0.01 vs. normal controls of the same antibody group. The cut-off values for platelet autoantibodies against platelet GPIX, GPIb, GPIIIa, GPIIb and P-selectin were 95.21, 139.40, 110.1, 111.09 and 122.18 ng/mL, respectively (dashed line)