G6PD and G6PD deficiency: The prevalence of G6PD phenotypic deficiency, based on these cut-off reference values revealed that 14/196 (7.1%), including 12 (11.7%) males and 2 (2.2%) females were in Class II (severe G6PD deficiency) and 15/196 (7.7%), including 2 (1.9%) males and 13 (14.0%) females were in Class III (moderate G6PD deficiency) (Table 3).