Ferritin is a protein complex that stores iron inside your cells and releases it in a controlled manner. It is found in most living organisms and serves as the primary intracellular iron-storage protein, keeping iron in a soluble and non-toxic form
. In humans, ferritin acts as a buffer against both iron deficiency and iron overload. Ferritin is mainly located inside cells, especially in the liver, spleen, and bone marrow, but small amounts circulate in the blood. The level of ferritin in the blood reflects the total amount of iron stored in the body, making it a useful marker for diagnosing iron-related conditions
. Iron stored in ferritin is essential for producing healthy red blood cells, which carry oxygen throughout the body, and for supporting other vital functions like muscle and brain health
. When ferritin levels are low, it usually indicates iron deficiency, which can lead to anemia. Conversely, high ferritin levels may indicate inflammation, liver disease, iron overload, or certain cancers
. In summary, ferritin is a key protein that regulates iron storage and availability in the body, and its measurement via blood tests helps assess iron status and related health conditions
