total iron-binding capacity

total iron-binding capacity
(TIBC) a measure of the total amount of iron that can be bound by the transferrin in a serum sample, determined by saturating the transferrin with iron, then removing the unbound iron with an absorbent and measuring the iron in the filtrate; used in the evaluation of patients with iron deficiency or overload. See also transferrin saturation, under saturation.

Medical dictionary. 2011.

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