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Mariam Swidan: Why Hemolysis Severity Matters in G6PD Deficiency
Mariam Swidan/LinkedIn
May 22, 2026, 13:31

Mariam Swidan: Why Hemolysis Severity Matters in G6PD Deficiency

Mariam Swidan, Biomedical Science Graduate, Clinical Laboratory Professional, shared a post on LinkedIn:

“Did you know?

In G6PD deficiency, hemolysis can be both intravascular and extravascular, but the mechanism is actually stepwise, not separate.

Oxidative stress first causes hemoglobin denaturation – Heinz body formation.

  • In the spleen, macrophages ‘pluck out’ these Heinz bodies – forming bite cells – extravascular hemolysis.
  • But if oxidative damage is severe, the RBC membrane becomes too fragile – cells rupture directly in circulation – intravascular hemolysis.

So it’s not two different processes – it’s a spectrum of damage severity.

Clinical insight:

  • Milder stress – mostly extravascular
  • Severe stress – significant intravascular hemolysis (leads to hemoglobinuria).”

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G6PD deficiency Health Heinz body Hematology hemolysis Hemostasis Hemostasis News Hemostasis Today Mariam Swidan Medicine RBC
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