How full your iron transport is. Ferritin alone can mislead; saturation is the number that often catches what ferritin misses.
| Result | Band |
|---|---|
| Under 20% | Low |
| 20 to 50% | Normal |
| Above 50% | High |
Transferrin saturation = (serum iron ÷ TIBC) × 100. Reference ranges differ between laboratories and between men and women.
BloodMarker reads your whole panel and tells you what the lines say together, which is the part no single calculation can do.
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It is the percentage of your iron-carrying capacity that is currently occupied by iron.
Ferritin rises with inflammation, so it can look normal or high while iron availability is low. Saturation is less affected by that.
Not medical advice. These calculators are for information only. Reference bands differ between laboratories and none of these numbers can be interpreted without your history, your other results and a clinician. Nothing you type here is sent to us or stored on a server.