← Blood tests
Total Iron Binding Capacity (TIBC)
Routine annualalso —
What it isTIBC measures the total amount of iron transferrin can carry — essentially a proxy for transferrin levels.
DoesReports the body's iron-transport capacity.
GoodMid-range TIBC with appropriate iron and ferritin signals balanced iron status.
BadTIBC rises in iron deficiency (the body upregulates transferrin to grab more iron) and falls in chronic disease and inflammation.
- Standard
- 250–425 µg/dL.
- Optimal
- 280–370 µg/dL (narrow target)
- Modifiers
- Inversely related to iron stores; falls with inflammation.
How to optimize
- Lifestyle
- —
- Diet
- —
- Supplements
- —
- Peptides
- —
- Drugs
- Treat underlying cause.
Reference ranges are general adult lab norms; optimal ranges are editorial picks from the longevity literature — not medical advice. Always interpret results with your physician.
within Iron