Clinical assessments of receiver-operator characteristics curves (ROC) for acute kidney injury, derived by using uAlb/Cr, uTP/Cr, MCP-1/Cr, and NGAL/Cr for the 29 AKI+ and AKI− patients who are described in the text. The greatest area under the curve was for albumin (0.874), followed by MCP-1 (0.819), NGAL (0.810), and uTP.