Ferritin
What is it?
Ferritin is a protein that stores iron in the body. It reflects iron stores. Low levels indicate deficiency; high levels may mean iron overload or inflammation.
Normal ranges
Men: 30–300 ng/mL. Women: 15–150 ng/mL.
Units: ng/mL
Causes of deviations
Low levels:
Iron deficiency anemia, heavy periods, blood loss.
High levels:
Hemochromatosis, inflammation, alcoholism, iron supplements.
When to see a doctor
If low — for anemia treatment; if high — to rule out hemochromatosis.
This information is for educational purposes and does not replace medical advice.
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