To date, most of G6PD studies in Cambodia have been conducted in a single site or in particular healthy populations (soldiers, children) using different methods to measure G6PD enzyme activity and different enzyme cut-offs to classify individuals as G6PDd (Table 1) [20,23,24,26,28], while the most useful G6PDd data should come from malaria-infected patients. Here, G6PD is linked to malaria.