IGFBP7 and acute kidney injury: Similarly, at day 2 after OLT (T3), urinary [TIMP-2] × [IGFBP-7] did not differ from baseline in the no AKI group (0.45 ± 0.44, P = 0.99) or in the AKI group (2.06 ± 3.76, P = 0.50).