Selenium — Blood Levels, Functions, Deficiency
Updated: June 2025
Selenium is a trace element with antioxidant properties, a component of selenoproteins (glutathione peroxidase, thioredoxin reductase). Important for thyroid function, immunity, and reproductive health.
Reference Range
70–150 мкг/л
Causes of Elevation
- Insufficient intake (endemic regions)
- Keshan disease (selenium deficiency + Coxsackie virus)
- Malabsorption
- Long-term parenteral nutrition
- Chronic kidney disease
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