Ferritin is the protein that stores iron. Its level reflects your body's iron reserves, and it also rises with inflammation.
- Normal range (adults)
- Men 24–336 ng/mL (24–336 µg/L) · Women 11–307 ng/mL (11–307 µg/L)
- Sample
- Blood
- Fasting
- Not usually needed
- Also called
- Serum Ferritin, S.Ferritin, Ferritin Level, Ferritin, Iron Storage Protein
Ferritin normal range
| Group | ng/mLConventional units: US, South Asia | µg/LSI units: UK, Europe, Australia, international |
|---|---|---|
| Men | 24–336 | 24–336 |
| Women | 11–307 | 11–307 |
Your report may use either unit system; labs in the Gulf often print both. Ranges also vary slightly between laboratories, so the range printed on your own report is the one to go by.
Why is the Ferritin test done?
It is the best single test for iron deficiency and is used to check iron overload.
What does a high Ferritin level mean?
High ferritin can mean too much stored iron, but more often it reflects inflammation, infection, fatty liver or alcohol.
Common causes
- Inflammation or infection
- Fatty liver and alcohol
- Hemochromatosis
- Repeated transfusions
- Some cancers (rare)
Diet and lifestyle tips
- Avoid alcohol
- Stop iron and vitamin C supplements unless prescribed
- Lose weight if you have fatty liver
- Your doctor may check transferrin saturation
What does a low Ferritin level mean?
Low ferritin means your iron stores are depleted, even before anemia develops. It can cause tiredness, hair loss and poor concentration.
Common causes
- Heavy periods
- Pregnancy
- Low dietary iron
- Blood loss from the stomach or bowel
- Poor absorption (celiac disease)
Diet and lifestyle tips
- Eat red meat, liver, chicken, fish, lentils, chickpeas, beans and spinach
- Combine with vitamin C foods
- Avoid tea and coffee with meals
- Iron supplements are usually needed; your doctor will advise the dose and length of treatment
When should you see a doctor?
Low ferritin in men or after menopause should be investigated for hidden blood loss.
Last updated
This page is for general education and is not a diagnosis. Normal ranges differ between laboratories, so always compare your result with the reference range printed on your own report, and discuss abnormal results with your doctor.