Individual tests

Ferritin is a protein that stores iron inside your cells. You need iron to make healthy red blood cells, and it is vital for muscles, bone marrow, organs, and brain development in children. Low ferritin levels may indicate iron deficiency anemia or another related condition. High ferritin levels can indicate there is excess iron in your body, suggesting liver disease, hyperthyroidism, or alcohol abuse.
Interleukin-6 (IL-6) is a protein that helps regulate immune responses, which makes the IL-6 test potentially useful as a marker of immune system activation. This test may be used to help evaluate a person who has a condition associated with inflammation, such as lupus, rheumatoid arthritis, or with infections like sepsis.
Serum iron test measures the amount of iron in the blood. Transferrin test measures transferrin, a protein that moves iron throughout the body. Total iron-binding capacity (TIBC) measures how well iron attaches to transferrin and other proteins in the blood. These tests help to detect the cause of anemia relating to iron deficiency.
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