IGFBP7 and acute kidney injury: Urinary [TIMP-2]*[IGFBP7] on day 0 showed an AUC of 0.751 (95% CI 0.701–0.852, p < 0.001) for predicting nonrecovery from AKI with an optimal cut-off value of 1.05 [(ng/mL)2/1000].