Rice Krispies noun (A trademark for) a breakfast cereal made from grains of rice which are steamed, sweetened, and then heated rapidly in the manner of popcorn; (also in singular) a piece of this cereal.
A ferritin test measures the amount of ferritin in your blood. Ferritin is a blood cell protein that contains iron. A ferritin test helps your doctor understand how much iron your body is storing.
A ferritin blood test is done to: 1  Find the cause of anemia, especially iron deficiency anemia. 2  See if inflammation is present. 3  See if too much iron (hemochromatosis) is present.  Check to see if iron treatment to raise or lower the iron level is working.