The Iron (Fe) in Serum test is a laboratory procedure used to measure the level of iron in the blood to assess the amount of available iron in the body. Iron plays a vital role in oxygen transport through hemoglobin in red blood cells, and therefore, maintaining normal iron levels is crucial for vital body functions. This test is primarily used to diagnose iron deficiency anemia or detect conditions of iron overload, which may indicate disorders such as Hemochromatosis. The iron test is typically performed alongside other tests, such as the Total Iron-Binding Capacity (TIBC) test, to provide a comprehensive evaluation of the body’s iron status and overall blood health.