What is ferritin?
Ferritin is the major iron storage protein of the body. Ferritin levels can be used to indirectly measure the iron levels in the body. Ferritin has the shape of a hollow sphere that permits the entry of a variable amount of iron for storage (as ferric hydroxide phosphate complexes).
What is the ferritin blood test?
The ferritin test uses venous blood to measure ferritin levels. The test is sometimes ordered together with other tests to help evaluate the body’s iron stores, such as an iron level or a total iron binding capacity test.