G6PD and G6PD deficiency: It is noteworthy, however, that Espino et al. [50] reported that the CareStartTM G6PD RDT is more sensitive in detecting G6PD deficiency using venous blood compared to capillary blood in a recent study in the Philippines (93.8 vs 68.8 %, respectively) at a cut-off activity of 30 % of normal.