1. Date of download: 6/28/2016 From: Sensitivity and Specificity of a Single Emergency Department Measurement of Urinary Neutrophil Gelatinase–Associated Lipocalin for Diagnosing Acute Kidney Injury Ann Intern Med. 2008;148(11):810-819. doi:10.7326/0003-4819-148-11-200806030-00003 Study flow diagram. Figure Legend: Copyright © American College of Physicians. All rights reserved.American College of Physicians

2. Date of download: 6/28/2016 From: Sensitivity and Specificity of a Single Emergency Department Measurement of Urinary Neutrophil Gelatinase–Associated Lipocalin for Diagnosing Acute Kidney Injury Ann Intern Med. 2008;148(11):810-819. doi:10.7326/0003-4819-148-11-200806030-00003 Box plots of urinary neutrophil gelatinase–associated lipocalin (NGAL) and serum creatinine levels, by diagnostic group.Top. Patients with acute kidney injury had markedly elevated mean urinary NGAL levels compared with patients who had other forms of kidney dysfunction. Little overlap was present, except in 3 patients with chronic kidney disease and 1 patient with prerenal azotemia who had high urinary NGAL levels. Bottom. Patients with acute kidney injury had significantly elevated mean serum creatinine levels compared with patients who had other forms of kidney dysfunction, but values overlapped among the different categories of kidney function. To convert mg/dL to µmol/L, multiply by 88.402. Figure Legend: Copyright © American College of Physicians. All rights reserved.American College of Physicians

3. Date of download: 6/28/2016 From: Sensitivity and Specificity of a Single Emergency Department Measurement of Urinary Neutrophil Gelatinase–Associated Lipocalin for Diagnosing Acute Kidney Injury Ann Intern Med. 2008;148(11):810-819. doi:10.7326/0003-4819-148-11-200806030-00003 Kidney injury biomarkers versus clinical outcome.Measurements are normalized per gram of creatinine. Bars show the proportion of patients with biomarker levels above the selected cutoffs and clinical outcome. The total number of patients whose levels were above the cutoff was 66 for creatinine, 31 for neutrophil gelatinase–associated lipocalin (NGAL), 133 for N-acetyl-β-d-glucosaminidase (NAG), 143 for α 1 -microglobulin (A 1 M), and 294 for α 1 -acid glycoprotein (AAG). *P < 0.001 compared with NGAL. Figure Legend: Copyright © American College of Physicians. All rights reserved.American College of Physicians