What Is a Normal Ferritin Level?
The normal Ferritin range is 12–300 ng/mL (optimal >50). Values below or above this range may indicate a condition that requires further evaluation.
Reference Range Table
| Marker | Low | Normal | High |
|---|---|---|---|
| Ferritin | Below 12 ng/mL — iron deficiency | 12–300 ng/mL (optimal >50) | Above 300 ng/mL — iron overload or inflammation |
What Affects Your Results
Inflammation and infection (ferritin rises as part of the immune response), liver disease, alcohol use, recent blood donation, menstruation, and vigorous exercise can all affect ferritin levels.
When to Retest
If supplementing for iron deficiency, retest in 8-12 weeks. Once optimal (>50 ng/mL), every 6-12 months for women and annually for men.
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