What is Ferritin (Ferritin)?
Ferritin is measured as part of a iron studies panel. Your ferritin is normal — your iron stores are adequate.
What does a high Ferritin mean?
Elevated ferritin can indicate inflammation, infection, liver disease, or iron overload (hemochromatosis). Ferritin is also an acute-phase reactant — it rises when the body is under stress.
What does a low Ferritin mean?
Your ferritin is low, meaning your body's iron stores are depleted. Even if other values look borderline, low ferritin confirms iron deficiency. This is the most sensitive marker for iron deficiency.
If markedly low: Your ferritin is critically low — your iron stores are nearly depleted. This is a definitive sign of iron deficiency.
Understand your whole report, not just one number
A single value rarely tells the full story — Ferritin is best read alongside the rest of your panel. Paste your values or upload your report and get a plain-English explanation of every marker, with the important results flagged.