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Serum iron is a medical laboratory test that measures the amount of circulating iron that is bound to transferrin and freely circulate in the blood. Clinicians order this laboratory test when they are concerned about iron deficiency, which can cause anemia and other problems. 65% of the iron in the body is bound up in hemoglobin molecules in red blood cells.
Ferritin is found in most tissues as a cytosolic protein, but small amounts are secreted into the serum where it functions as an iron carrier. Plasma ferritin is also an indirect marker of the total amount of iron stored in the body; hence, serum ferritin is used as a diagnostic test for iron-deficiency anemia and iron overload. [4]
Normal total iron-binding capacity for both sexes is 240 to 450 μg/dL. [6] 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 nanograms per milliliter (ng/mL) for men and 15 to 150 ng/mL for women. [8]
These examples demonstrate that to properly understand a value for TIBC, one also must know the serum iron, the percent transferrin saturation, and the individual clinical situation. In modern laboratory testings, serum ferritin levels are generally accepted as reliable single indicators of the presence of iron deficiency. [citation needed]
[34] [35] [36] In premenopausal females, normal range of serum ferritin is between 12 and 150 [34] or 200 [35] ng/mL (330 or 440 pmol/L). [36] In those with hemochromatosis, the serum ferritin level correlates with the degree of iron overload. [7] Ferritin levels are usually monitored serially in those with hemochromatosis to assess response to ...
Reference ranges (reference intervals) for blood tests are sets of values used by a health professional to interpret a set of medical test results from blood samples. Reference ranges for blood tests are studied within the field of clinical chemistry (also known as "clinical biochemistry", "chemical pathology" or "pure blood chemistry"), the ...
One dietitian on TikTok cited a study that said the practice helped to improve hemoglobin (a protein in red blood cells that carries oxygen and can only be formed with iron) and serum iron levels ...
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.