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Discriminatory potency of biomarkers between the primarily inflammatory entities glomerulonephritis/vasculitis (IRD) vs. other entities of CKD (NIRD), illustrated by receiver-operating characteristic (ROC) curves of urinary (A) calprotectin, (B) NGAL, (C) KIM-1, and (D) ACR. Diagonal lines indicate differentiation by chance. NGAL: Neutrophil gelatinase-associated lipocalin; KIM-1: kidney injury molecule-1; ACR: albumin/creatinine ratio.
