FABP1 and acute kidney injury: The biomarker with the largest area under the curve (AUC) forpredicting AKI onset was urinary L-FABP at the following time points: beforesurgery, after anesthesia induction, upon stent placement, and 4 h after surgery;AUCs were 0.83, 0.81, 0.79, and 0.75, respectively (Table 4).