G6PD and hyperinsulinemic hypoglycemia, familial, 4: To avoid this, G6PD activity is measured earlier at the Infectious and Tropical Diseases Department of the Cayenne hospital, French Guiana, based on the hypothesis that G6PD activity during a P. vivax malaria episode is stable over time and that the malaria-related haemolysis does not hide a G6PD deficiency.