G6PD (Glucose-6-Phosphate Dehydrogenase): is an enzyme that helps red blood cells function properly and maintain a normal lifespan. G6PD deficiency is a hereditary condition that can make red blood cells more vulnerable to certain stresses, such as high-dose vitamin C, which can cause hemolytic anemia. If your test shows no deficiency, you are cleared for Aquapuncture services. This test is usually repeated yearly.