Figure 2.

Percentage of EHS self-reported patients having positive thiobarbituric acid reactive substances (TBARS), oxidized glutathione (GSSG), and/or NTT oxidative stress biomarkers measured in the peripheral blood, according to Reference [22]. ■ Corresponds to NTT, TBARS, and GSSG, i.e., all three biomarkers measured in 14 of the 32 included patients. ☐ Corresponds to TBARS and GSSG analyzed in all 32 included patients. “Positive” biomarkers correspond to patients having one, two, or three markers with levels above the upper normal limits, and “total” corresponds to patients having at least one positive biomarkers, i.e., having one, two, or possibly three positive biomarkers.