Ferritin (Iron Stores)
Ferritin is an iron-storage protein measured during iron assessment, but a result alone cannot establish iron status or the cause of a change.
SomaZeus display band
For care decisions, use the interval printed by the reporting lab and ask your clinician. Labs, assay methods, and individual context vary; the numbers below are SomaZeus display guidance.
- Male: 30–300 ng/mL
- Female: 15–200 ng/mL
Watch points
- Watch point 1: at or below 30 ng/mL
- Watch point 2: at or below 40 ng/mL
Watch points — female
- Watch point 1: at or below 15 ng/mL
- Watch point 2: at or below 30 ng/mL
Why hard-training athletes watch it
Nutrition, blood loss, illness, inflammation, training, and other factors may be relevant. Symptoms and logs give a clinician context but cannot identify the cause.
When to retest
Ask your clinician whether and when a repeat or a broader iron assessment is appropriate for your symptoms and history.
Talk to your clinician
Your clinician can interpret ferritin with symptoms, history, the broader iron panel, other relevant results, and the reporting lab interval.
Related reading
SomaZeus charts ferritin (iron stores) over time and keeps weight and nutrition logs in the same dated record, so you can review context beside the result. Get your first read →