Figure 1.

Levels of iron and iron-related proteins during the course of pneumonia. Data are shown as median and 25–75 percentiles. Comparison of level at admission and 6-week follow-up by Wilcoxon signed-rank test. ***, P < .001. Reference ranges in parenthesis: (A) hepcidin (morning levels; women, <0.3–32 ng/mL; men, 0.9–34 ng/mL); (B) ferritin (women, 15–200 μg/L; men, 30–400 μg/L); (C) iron (9–34 µmol/L); (D) transferrin (2.0–3.3 g/L); (E) transferrin saturation (women 18–49 years, 10%–50%; women ≥50 years, 15%–50%; men, 15%–57%); (F) soluble transferrin receptor (0.76–1.76 mg/L).