Iron Saturation Test
The percentage of your iron-binding capacity currently being used. Iron divided by TIBC.
What is Iron Saturation?
The percentage of your iron-binding capacity currently being used. Iron divided by TIBC.
Iron Saturation Reference Range
These are the typical adult reference ranges used by major US labs. Your report will include the specific range used by the lab that processed your sample.
| Population | Range |
|---|---|
| age 18+ | 20.0 – 50.0 % |
Reference ranges are educational. Always interpret your result with the specific range printed on your lab report and discuss anything outside the range with a clinician.
What your Iron Saturation result may mean
Can reflect iron overload (e.g. hemochromatosis) or supplement excess.
Often reflects iron deficiency.
Educational only — not a diagnosis. Many factors can influence a single result. Discuss anything that concerns you with a healthcare provider.
Sources
Related Iron & Anemia biomarkers
Markers commonly tested alongside Iron Saturation.
Frequently asked
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