Ferritin level test measures the amount of ferritin in the blood. Ferritin is a protein that stores iron, so the body can use it later. It's a good indicator of how much iron is stored in the body. Low ferritin levels can point to iron deficiency, which might lead to anemia, a condition characterized by fatigue and weakness due to a lack of healthy red blood cells. On the other hand, high ferritin levels might suggest conditions such as hemochromatosis (iron overload) or indicate inflammation or chronic disease. This test is crucial for diagnosing and managing conditions related to iron metabolism and storage.