Vitamins
Selenium
Selenium is a trace mineral that supports thyroid hormone conversion (T4 to T3), glutathione peroxidase activity, and immune function. Deficiency impairs thyroid function and increases oxidative stress.
Brazil nuts are the richest dietary source — 1–2 per day provides the RDA.
What It Measures
Serum selenium concentration.
Reference Ranges
| Status | Range (mcg/L) |
|---|---|
| Optimal | 120–150 mcg/L |
| Normal | 70–150 mcg/L |
| Borderline | 50–70 mcg/L |
| Out of Range | < 50 or > 200 mcg/L |
How GATOR Tracks This
Lab Providers
Function HealthLabCorp
Related Biomarkers
This content is for informational purposes only and does not constitute medical advice. Reference ranges may vary by laboratory and individual factors. Consult a qualified healthcare provider for interpretation of your results and treatment decisions.
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