PAIgG values of HD patients with thrombocytopenia.

PAIgG was measured by competitive micro-ELISA. The reference range was 9.0 to 25 ng/10⁷ platelets. The proportion of HCV-negative HD patients who were PAIgG-positive (more than 25 ng/10⁷platelets) was 42.9%, whereas 81.8% of the HCV-positive HD patients were PAIgG-positive. The mean titer of PAIgG was 105.2 ± 94.2 ng/10⁷ platelets in the HCV-positive HD patients (n = 22) and 28.2 ± 18.1 ng/10⁷ platelets in the HCV-negative HD patients (n = 14), and the difference was significant (P = .005).