LCN2 and acute kidney injury: The reverse was true for 24 h Ang-2 levels, with significantly higher (p = 0.003) levels in the AKI group, defined using the AKIN definition (9.81 pg/ml, IQR 8.45–12.2 vs. 6.34 pg/ml, IQR 4.49–8.9) but not the plasma NGAL cut-off definition (data not shown).