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Box plot shows neutrophil gelatinase-associated lipocalin (NGAL) levels in patients with and without acute kidney injury (AKI) according to patient groups. Mean serum NGAL levels were significantly increased in patients with AKI vs. those without AKI (670.0 ± 431.9 ng/dL vs. 490.3 ± 391.6 ng/dL; P < 0.001). *Mean NGAL values. CCF: congestive cardiac failure; SIRS: systemic inflammatory response syndrome
