LCN2 and type 2 diabetes mellitus: The results indicated that urinary NGAL had sufficient diagnostic accuracy (sensitivity = 0.773, specificity = 0.545, AUC = 0.674) and that RBP had good diagnostic accuracy (sensitivity = 0.591, specificity = 0.788, AUC = 0.723) for eGFR < 60 ml/min per 1.73 m2 in T2DM patients, but the difference between urinary NGAL and RBP was not significant (p = 0.32) (Figure 4(a)).