LCN2 and acute kidney injury: Some of the first 250 AKI episodes captured were classified as postrenal (n = 11).However, the role of the NGAL (and all other tubular damage biomarkers) asimplemented in our center was mostly to discriminate intrarenal from functional AKIepisodes, as postrenal AKI is managed differently, and such biomarkers have no clearrelevance here.