Research Article
Evidence on the Heroin-Mediated Impairment of the Oxidative Status of Erythrocytes
Figure 3
Correlation analysis of serum GPX activity and serum MetHb to total hemoglobin ratio among heroin-addicted subjects. A significant direct and linear association was evident with rā=ā0.777, . The continuous line defines the best fit linear correlation model while the dotted lines define the standard error means (SEM).