FERRITIN TEST

A ferritin test measures the amount of ferritin in the blood. Ferritin is a blood protein that contains iron. This test can be used to find out how much iron the body stores. It allows your body to use the iron when it needs it. A ferritin test indirectly measures the amount of iron in your blood. If a ferritin test shows that the blood ferritin level is low, it means the body's iron stores are low. This is a condition called iron deficiency. Iron deficiency can cause anemia.