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Transferrin saturation (TS), measured as a percentage, is a medical laboratory value. 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.
Low, as the body holds iron intracellularly with ferritin. Low. The body produces less transferrin (but more ferritin), presumably to keep iron away from pathogens that require it for their metabolism. This is mainly regulated by increased hepcidin production. Normal Pregnancy or use of hormonal contraception, but without iron deficiency Normal ...
Serum ferritin falls to less than 20 ng/mL. Increased iron absorption, a compensatory change, results in an increased amount of transferrin and consequently increased iron-binding capacity. [4] Stage 2 – Erythropoiesis is impaired. In spite of an increased level of transferrin, serum iron level is decreased along with transferrin saturation.
For this reason, low ferritin levels carry more information than those in the normal range. A falsely low blood ferritin (equivalent to a false positive test) is very uncommon, [35] but can result from a hook effect of the measuring tools in extreme cases. [36] Low ferritin may also indicate hypothyroidism, [37] vitamin C deficiency or celiac ...
Transferrin and TIBC Transferrin saturation Ferritin Transferrin receptor Related tests Hb MCV Iron deficiency anemia: Iron overload (hemochromatosis) * Normal Anemia of chronic disease * * Porphyria cutanea tarda (PCT) Normal Thalassemia Sideroblastic anemia * Megaloblastic anemia: Hemolytic anemia * * * * Pregnancy or use of hormonal ...
The platelet count may be slightly above the high limit of normal in iron-deficiency anemia (termed a mild thrombocytosis), but severe cases can present with thrombocytopenia (low platelet count). [58] Iron-deficiency anemia is confirmed by tests that include serum ferritin, serum iron level, serum transferrin, and total iron binding capacity. [59]
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.
This explains why ferritin levels remain relative low in Hereditary hemochromatosis, while transferrin saturation is high. [23] [24] Transferrin and its receptor have been shown to diminish tumour cells when the receptor is used to attract antibodies. [16]