Nutrients
TIBC (Total Iron Binding Capacity)
Unit: μg/dLID: N010
What This Test Measures
Capacity of blood to bind iron; reflects transferrin
Conventional vs. Functional Optimal Range
Conventional "Normal"
240-450 μg/dLYour doctor says you're "fine" anywhere in this range
Functional Optimal
250-350 μg/dLThis is where you actually feel great
The gap between these ranges is why you feel terrible with "normal" labs. Conventional medicine waits for disease. Functional medicine optimizes for health.
Gabriel's Take
TIBC rises in iron deficiency (body trying to grab more iron) and falls in iron overload. Gabriel's optimal band is 250-350. Interpret with ferritin and iron saturation for complete iron status assessment.
When This Test Is High
Iron deficiency (high TIBC)
When This Test Is Low
Iron overload, chronic disease
Related Conditions
Iron deficiency, anemia
Recommended Follow-Up
Elevated TIBC = iron deficiency; low TIBC = iron overload or inflammation