Ferritin
Ferritin is a protein that stores iron in your cells and releases it when your body needs it. A ferritin test indirectly measures how much iron is stored in your body.
Category: Iron Studies
Also known as: ferritin, serum ferritin, feritin
Reference range: 12–300 ng/mL (Source: ABIM)
Standard unit: ng/mL
High values may indicate
High ferritin levels may indicate hemochromatosis, liver disease, chronic inflammation, infection, or certain cancers such as lymphoma.
Low values may indicate
Low ferritin levels indicate depleted iron stores and are the most sensitive early marker of iron deficiency anemia.
Frequently asked questions
- What is a normal Ferritin level?
- A typical reference range for Ferritin is 12–300 ng/mL (source: ABIM). Reference ranges vary by laboratory, age, and sex, so always compare against the range on your own lab report.
- What units is Ferritin measured in?
- Ferritin is most commonly reported in ng/mL. Labs in different countries may use other units — you can convert between them with BloodId's blood test unit converter.
- Where do Ferritin reference ranges come from?
- BloodId uses ABIM standard reference ranges and educational information from MedlinePlus (see our methodology). Reference ranges still vary by lab, age, and sex, so always compare against your own report.
- Can I track Ferritin over time?
- Yes. Upload results from any lab and BloodId charts your Ferritin over time against its reference range, so you can see whether the trend is rising, falling, or stable.