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TIBC
Measures transferrin capacity to bind iron
Also known as: Total Iron Binding Capacity
Reference Ranges
Clinical Reference
250.0 – 450.0 μg/dL
Optimal Range
250.0 – 370.0 μg/dL
Inverse relationship with iron saturation
Related Conditions
Iron Deficiency Anemia
High
Chronic Inflammation
Low
Liver Disease
Low
Food & Lifestyle Recommendations
🍎 Food
Increase heme iron intake: red meat, poultry, fish
Heme iron is the most effective dietary source for correcting iron deficiency
🍎 Food
Avoid tea and coffee with meals — tannins inhibit iron absorption
Polyphenols in tea and coffee can reduce iron absorption by 50-70%
🍎 Food
Anti-inflammatory diet may help normalize TIBC in chronic inflammation
Chronic inflammation reduces TIBC via hepcidin-mediated iron metabolism changes
Evidence-Backed Supplements
When High
-
Strong evidence; high TIBC indicates iron deficiency. Iron supplementation reduces TIBC as iron stores are replenished.
Iron bisglycinate or ferrous fumarate 25–65 mg elemental iron/day On empty stomach or with vitamin C -
Moderate evidence; vitamin C enhances iron absorption, indirectly helping normalize TIBC when co-supplemented with iron.
Ascorbic acid 250–500 mg/day Divided doses
When Low
-
Limited evidence; zinc deficiency may lower TIBC. However, low TIBC usually indicates chronic inflammation or liver disease.
Zinc picolinate or bisglycinate 15–30 mg/day Evening, away from iron/calcium
Questions to Ask Your Doctor
- Does my high TIBC confirm iron deficiency, and should I start iron supplementation? High TIBC is a classic marker of iron deficiency. Ferritin and serum iron should be checked to confirm.
- Could my low TIBC indicate chronic inflammation? Low TIBC is commonly seen in chronic inflammation (anemia of chronic disease) or liver disease.
Upload your blood test to see how your TIBC compares to reference and optimal ranges.
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