Fig. 4

Receiver operator characteristic (ROC) curve for the prediction of AKI 2–3. a Preoperative serum creatinine and eGFR, b urinary [TIMP-2]*[IGFBP7], eGFR and serum creatinine 4 h after CABG. c urinary [TIMP-2]*[IGFBP7], eGFR and serum creatinine on postoperative day 1 after CABG. d Maximum urinary [TIMP-2]*[IGFBP7], eGFR and serum creatinine during the first 24 h after CABG