Performance of (A) different cutoffs of serum glycated albumin (GA) alone, (B) impaired fasting glucose (IFG) only, and (C) IFG plus different cutoffs of serum GA, ie. fasting plasma glucose (FPG) < 100 mg/dl and serum GA < cutoffs to exclude diabetes mellitus (DM), and FPG ≥ 126 mg/dl or serum GA ≥ cutoffs to diagnose DM. The gene discussed is ALB; the disease is diabetes mellitus.