BACKGROUND: Unlike developing countries, in Egypt, gasoline is dispensed at dedicated stations by gasoline filling workers. This leads to high levels of exposure to the aromatic compounds in gasoline principally benzene, toluene, ethyl benzene, and xylene BTEX with the consequences of adverse health effects including oxidative stress. ...The hygienic effect HE of the BTEX pollutant mixture exceeded the allowed borderline HE in Egypt although it did not show a significant correlation with different oxidative stress biomarkers and trace metals. ...