Serum Iron: what it means.
Written to our editorial standards · reviewed against published research· Updated 27 Jun 2026
Typical reference bands (µg/dL)
Lowunder 60 µg/dL
Optimal70-170 µg/dL
Highover 190 µg/dL
Ranges vary by laboratory, age, and sex, your lab's own reference range always takes precedence.
Common causes
- Low dietary intake or blood loss when low
- Iron supplements or overload conditions such as hemochromatosis when high
- Inflammation, which can distort the reading
What it can feel like
- Fatigue, weakness, and poor exercise tolerance when low
- Often silent when mildly high
Who should test
Serum iron is best read alongside ferritin and transferrin saturation rather than on its own. Discuss persistent abnormalities with your clinician.
Supplements that help raise Serum Iron
Evidence-led, and only a piece of the picture, diet, lifestyle, and your clinician matter most.
Vitamin C taken with an iron source increases absorption of the iron available for red-blood-cell production.
Shop the top pick for serum iron
Recommended
Solgar, Gentle Iron Bisglycinate 25mg
90 veg capsules · ~$14 · ★ 4.8
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Common questions
What does a low Serum Iron mean?
Common drivers include low dietary intake or blood loss when low; iron supplements or overload conditions such as hemochromatosis when high; inflammation, which can distort the reading. A result outside the optimal range is best read in context: discuss it with your clinician, who can weigh the full picture and your lab's own reference range.
What supplements help raise Serum Iron?
Evidence-led options include Iron Bisglycinate, Vitamin C. They support, but don't replace, diet, lifestyle, and medical care.
Educational use only, not medical advice or diagnosis. Always interpret lab results with a qualified clinician.