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Total iron-binding capacity (TIBC) or sometimes transferrin iron-binding capacity is a medical laboratory test that measures the blood's capacity to bind iron with transferrin. [1] Transferrin can bind two atoms of ferric iron (Fe 3+ ) with high affinity.
It is the value of serum iron divided by the total iron-binding capacity [1] of the available transferrin, the main protein that binds iron in the blood, this value tells a clinician how much serum iron is bound. For instance, a value of 15% means that 15% of iron-binding sites of transferrin are being occupied by iron.
Iron tests are groups of clinical chemistry laboratory blood tests that are used to evaluate body iron stores or ... Total iron-binding capacity (TIBC) Transferrin ...
Studies reveal that a transferrin saturation (serum iron concentration ÷ total iron binding capacity) over 60 percent in men and over 50 percent in women identified the presence of an abnormality in iron metabolism (Hereditary hemochromatosis, heterozygotes and homozygotes) with approximately 95 percent accuracy.
Another lab test saturates the sample to measure the total amount of transferrin; this test is called total iron-binding capacity (TIBC). These three tests are generally done at the same time, and taken together are an important part of the diagnostic process for conditions such as anemia , iron deficiency anemia , anemia of chronic disease and ...
Total iron-binding capacity increases when iron deficiency exists. [4] Serum ferritin levels reflect the iron stores available in the body. [4] The normal range is 20 to 200 ng/mL for men and 15 to 150 ng/mL for women. [8] Low levels (< 12 ng/mL) are specific for iron deficiency. [4]
MerckMedicus: 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 ...
Iron-deficiency anemia is confirmed by tests that include serum ferritin, serum iron level, serum transferrin, and total iron binding capacity. [59] A low serum ferritin is most commonly found. However, serum ferritin can be elevated by any type of chronic inflammation and thus is not consistently decreased in iron-deficiency anemia. [23]
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