The median values of G6PD activity in G6PD deficiency and G6PD intermediate were 0.49 ± 0.39 U/g Hb (range from 0.00 to 1.04 U/g Hb) and 3.59 ± 0.82 U/g Hb (range from 1.86 to 4.04 U/g Hb) (Fig. 2). This evidence concerns the gene GSTM1 and G6PD deficiency.