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Serum iron - Definition

May 2016


Serum iron refers to the rate of iron which is not bound up in red blood cells but rather circulating in blood serum (or plasma). This rate may vary under certain circumstances. For example, in the case of hemochromatosis (accumulation of large quantities of iron in the organism) serum iron levels are very high, while inversely, in the case of anemia the rate of serum iron is low. A normal rate of serum iron is between 12 and 30 mmol/L or between 65 and 180 mg/dl (the lowest rates tolerated being 11 mmol/L in men, 12.5 mmol/L in women, and 18 mmol/L in infants).

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