C3 and Microscopic hematuria: There were no statistically significant differences among the three groups in gender, the presence of microscopic hematuria, type 2 diabetes mellitus, and nephrotic syndrome, the positivity of serum anti-PLA2R antibody, and the levels of serum albumin, total cholesterol, triglyceride, creatinine, uric acid, serum IgG, and C3 (Table 1).