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Table 3 Exposure days: Median concentrations of oxidative stress biomarkers in EBC, plasma and creatinine corrected urine (respective unit/g creatinine), presented by time point

From: Increase in oxidative stress levels following welding fume inhalation: a controlled human exposure study

   EBC PLASMA CREATININE CORRECTED URINE
  Time Median (range) Median (range) Median (range)
Total Reducing Capacity [a.u.] T1 26 (15–31.5) 162.2 (120–197.3)a 1555.4 (789.2–3311.7)
T2 27 (13–56.7) 161.8 (107.7–210.3)a 2082.1 (1061.2–3388.7)
T3 26.2 (15.7–34) 167.3 (116.5–245.3)a 2118.7 (987.7–4201.8)
T4 26.6 (15–55) 173.5 (99.5–233.7)a 2355.0 (1351.8–3843.8)
H2O2 [μM] T1 0.08 (˂LOD- 0.3) 4.6 (1.8–11.7) 12.5 (5.3–209.9)
T2 0.07 (˂LOD- 0.6) 4.4 (2.1–10.8) 19.9 (5.8–104.3)
T3 0.05 (˂LOD-0.2) 4.4 (2.0–11.6) 19.5 (5.7–129.9)
T4 0.07 (˂LOD-0.3) 4.4 (2.0–15.7) 39.9 (6.4–135.8)
MDA [nM] T1 3.8 (˂LOD-30.0) 103.6 (53.7–212.0) 280.2 (151.5–1012.5)
T2 6.4 (˂LOD-18.3) 97.7 (64.1–282.2) 288.3 (126.9–634.3)
T3 5.0 (˂LOD-34.9) 94.5 (71.6–476.6) 272.7 (108.1–513.9)
T4 3.2 (˂LOD-16.8) 108.0 (63.6–529.6) 236.8 (103.6–415.9)
8-OHdG [μg/l] T1 3.8 (˂LOD -15.2) 1.7 (˂LOD -4.8)
T2 3.9 (˂LOD -26.7) 1.5 (˂LOD -3.1)
T3 4.2 (˂LOD -34.2) 1.8 (˂LOD -19.5)
T4 4.5 (˂LOD -39.2) 2.1 (˂LOD -33.1)
  1. EBC was not assessed for 8-OHdG concentrations. aTotal reducing capacity concentration was measured in whole blood and not plasma