Fig. 2From: Serum cystatin is a useful marker for the diagnosis of acute kidney injury in critically ill children: prospective cohort studyAt 6 h, ROC analysis of serum cystatin C revealed a sensitivity of 94 % and a specificity of 57 % with cut-off value of 0.645 mg/l, while ROC analysis of serum creatinine showed a sensitivity of 65.4 % and a specificity of 70 % with cut-off value of 30 umol/l. This difference was not significant (p = 0.15)Back to article page