Patients were grouped as follows: group 1, no complication; group 2, rejection; group 3, delayed graft function requiring dialysis; group 4, rejection plus delayed graft function. There were no significant differences between groups 1 and 2, and between groups 3 and 4. Patients in groups 3 and 4 had significantly higher urinary neutrophil gelatinase-associated lipocalin levels as compared to those in groups 3 and 4