Ferritin Unit Converter

Ferritin is a protein that stores iron inside your cells. Think of it as your body's iron storage container, it holds onto iron when you don't need it and releases it when you do.

A ferritin blood test measures how much ferritin is in your blood, which reflects how much iron your body has in storage. Low ferritin means your iron reserves are depleted, while high ferritin can indicate iron overload or other conditions.

Ferritin is different from serum iron, which measures the iron circulating in your blood at a given moment. Ferritin gives a more complete picture of your body's overall iron status.

Ferritin is produced throughout the body, with the highest concentrations found in the liver, spleen, bone marrow, and muscles. Smaller amounts circulate in your blood.