Ferritin

Ferritin is a protein that stores iron in your body's cells, primarily in the liver, spleen, and bone marrow. It acts as a request-and-release system, holding iron safely until your body needs it for processes like making red blood cells or muscle function. Blood tests measuring ferritin levels help assess iron stores; low levels can indicate iron deficiency, which may cause fatigue and weakness. Conversely, high ferritin levels might suggest inflammation, infection, or excess iron. Overall, ferritin is a key indicator of your body's iron status, essential for maintaining healthy blood and energy levels.