Erythrocyte and plasma oxidative stress appears to be compensated in patients with sickle cell disease during a period of relative health, despite the presence of known oxidative agents ScienceDirect Persistent red blood cells retain their ability to move in microcapillaries under high levels of oxidative stress Communications Biology Glucose 6 phosphate Dehydrogenase (G6PD) Deficiency Concise Medical Knowledge Heinz bodies are small clumps of damaged hemoglobin found inside red blood cells. They form due to oxidative stress and are often seen in conditions like G6PD deficiency. Their presence can indicate L glutamine for sickle cell disease: Knight or pawn? Alina Sadaf, Charles T Quinn, 2020