Library/Iron/Ferritin/25

Ferritin of 25 ng/mLWhat it means, and what usually happens next

25ng/mL Ferritin
Low
153045150300

A ferritin of 25 ng/mL is under 30 ng/mL, where many guidelines say iron stores are likely depleted.

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Ferritin25ng/mL
Where it fallsLow
The usual rangeabout 30 to 300 ng/mL, depending on the lab, sex and age

What usually happens next

Low iron stores can cause tiredness, hair shedding and poorer exercise tolerance even with a normal hemoglobin.

Your doctor will look at why, and whether and how to replace iron.

When a ferritin can read wrong

Ferritin is also an inflammation marker: an infection, an inflammatory condition, fatty liver or heavy drinking can push it up and hide low iron. In those cases a ferritin under 70 ng/mL can still mean iron deficiency.

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Questions

Is a ferritin of 25 ng/mL normal?

A ferritin of 25 ng/mL is under 30 ng/mL, where many guidelines say iron stores are likely depleted. The usual range is about 30 to 300 ng/mL, depending on the lab, sex and age.

Is a ferritin of 25 ng/mL too low?

Under 15 ng/mL means iron stores are empty, and under 30 they're likely depleted. Between 30 and 45 it's low-normal; what matters is whether you're anaemic and why.

Can I take iron with a ferritin of 25 ng/mL?

Iron is something to replace with your doctor, after finding out why it's low, because taking it when you don't need it can do harm.

Worked out by LifeFrom from the WHO's 2020 ferritin guideline and the AGA guideline, and not yet reviewed by a clinician. For your own understanding: only a lab test, read by your clinician, diagnoses anything.