G6PD and Plasmodium vivax malaria: 7-day high dose primaquine (total dose of 7 mg/kg) is as efficacious as standard 14-day high-dose primaquine in radical treatment of vivax malaria at 1 year follow-up, but quantitative G6PD testing is required as there is a higher risk of haemolysis in treatments with a higher daily primaquine dose [15, 16].