What Is a Ferritin Test?

A ferritin test is a blood test that measures the amount of ferritin, a protein that stores iron in your body. Ferritin serves as an essential indicator of your body's iron reserves. This test helps determine if you have too much or too little iron, which can indicate various conditions like anemia, iron overload disorders, or chronic diseases. Unlike a simple iron test, the ferritin test provides insights into long-term iron storage rather than just circulating iron levels. It is often ordered alongside other iron-related tests to assess overall iron metabolism. The ferritin test is quick, minimally invasive, and provides critical information for diagnosing and managing conditions related to iron imbalances.