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Correlations of 24-hour urinary excretion of neutrophil gelatinase-associated lipocalin (NGAL) with renal functional parameters and Systemic Lupus Erythematosus Disease Activity Index (SLEDAI) scores in the systemic lupus erythematosus (SLE)-renal group. (a) Correlation between NGAL and serum creatinine levels. (b) Correlation between NGAL and 24-hour creatinine clearance (Ccr). (c) Correlation between NGAL and SLEDAI scores. *P < 0.05.
