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Nutritional
Ferritin
Clinical biomarkerIron statusBloodµg/L
A marker of body iron stores that also behaves as an acute-phase reactant.
What it measures
Circulating ferritin.
Why it matters
Used with other iron indices to evaluate iron deficiency or overload.
How to interpret it
Interpret alongside transferrin saturation, blood count and inflammation where appropriate.
Important limitations
Inflammation can raise ferritin independent of iron stores.
Evidence status
Clinical biomarker
Established clinical iron-status biomarker.
Research & guidance
Original papers, validation studies, reviews and clinical guidance connected to this measurement.
For education and evidence exploration, not diagnosis or individualized medical advice.