6.4. The Concentration of Methyl Hippuric Acid and Hippuric Acid. The concentration of methyl hippuric acid had a mean
of 78.3 mg/gram creatinine (SD at 74.7, Median 50.8 (Min, Max: 0.3, 331.7) mg/gram creatinine). When statistically comparing the concentration of methyl hippuric acid between the exposed group and the non-exposed group, it was found that the concentration of methyl hippuric acid in the urine was not different (p value > 0.05) (Table 3).