Compared with the No AKI group, the median concentration of urine NGAL in the AKI group rose significantly at 12 h (median 178.4 pg/mL vs. 88.0 pg/mL), and was also found to be higher at 24 h (median 243.6 pg/mL vs. 128.2 pg/mL p = 0.059), 48 h (median 201.7 pg/mL vs. 155 pg/mL p = 0.035), and 72 h (276.1 pg/mL vs. 70 pg/mL p = 0.056) (Table 2). Here, LCN2 is linked to acute kidney injury.