Total Iron Binding Capacity (TIBC)

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.