Afterward, he was given 0.25 mg/Kg body weight per day of primaquine for 14 days with the intention of preventing transmission by gametocytes and preventing relapse by hypnozoites after excluding Glucose-6-phosphatase dehydrogenase (G6PD) deficiency by performing a G6PD assay as G6PD deficiency is prevalent in Sri Lanka [14]. Here, G6PD is linked to hyperinsulinemic hypoglycemia, familial, 4.