For the non-AKI patients, the median of presepsin in patients with nonsepsis (n = 78) and the sepsis group (n = 37) were 406 pg/ml (range: 86 to 4,374) and 1,065 pg/ml (range 86 to 9,960), respectively (P < 0.0001). For the Risk patients, the median of presepsin in patients with nonsepsis (n = 25) and the sepsis group (n = 27) were 299 pg/ml (range: 71.2 to 3,361) and 831 pg/ml (range: 233 to 16,759), respectively (P < 0.01). For the Injury patients, the median of presepsin in patients with nonsepsis (n = 12) and the sepsis group (n = 27) were 463 pg/ml (range: 122 to 1,197) and 1,451 pg/ml (range: 237 to 4,200), respectively (P < 0.001). For the Failure patients, the median of presepsin in patients with nonsepsis (n = 14) and the sepsis group (n = 27) were 1,607 pg/ml (range: 454 to 8,516) and 1,523 pg/ml (range: 293 to 16,764), respectively (P = 0.175). The diagnostic accuracy of presepsin in patients with sepsis was determined by ROC analysis, the area under the curve was 0.789 for the non-AKI patient group, 0.735 for the Risk patient group, 0.855 for the Injury patient group and 0.593 for the Failure patient group.