LCN2 and acute kidney injury: There is accumulating evidence that NGAL, in combination with other markers, can influence diagnosis of some special renal diseases, such as acute tubular necrosis, diabetic kidney disease, and contrast‐induced nephropathy.15, 16, 17 Considering exocytosis of NGAL from the neutrophilia, rising NGAL levels might not only indicate AKI but also inflammation.