Early Ferritin Storage Check - Ferritin Test

Ferritin testing measures the concentration of the main iron-storing protein in blood serum. Ferritin levels accurately and directly reflect the body's total iron stores. Each nanogram/mL of ferritin in the blood corresponds to approximately 8-10 mg of stored iron. It is the most sensitive and specific indicator for diagnosing iron deficiency, even in its early stages before anemia is detected in a complete blood count (CBC).