Ferritin Blood Test

The ferritin blood test is a diagnostic tool used to measure the level of ferritin in the blood. Ferritin is a protein that stores iron in the body, and the test is primarily used to assess iron deficiency or overload.

Purpose of the Test

The main purposes of the ferritin blood test are:

• To diagnose iron deficiency anemia, which occurs when the body does not have enough iron to produce adequate amounts of hemoglobin.
• To monitor the effectiveness of iron replacement therapy in individuals with iron deficiency anemia.
• To evaluate cases of suspected iron overload, such as hemochromatosis, a genetic disorder that causes excessive iron absorption.

How the Test is Performed

The ferritin blood test involves:

• A healthcare professional drawing a blood sample from a vein in the arm using a needle and syringe or a vacuum tube.
• The blood sample being sent to a laboratory for analysis, where the level of ferritin is measured using an immunoassay or other techniques.

Interpretation of Results

The results of the ferritin blood test are typically interpreted as follows:

• Low ferritin levels: indicate iron deficiency, with values typically below 30 ng/mL for adults. The lower the level, the more severe the iron deficiency.
• Normal ferritin levels: vary by laboratory but are generally considered to be between 30 and 400 ng/mL for adult men and 15 and 200 ng/mL for adult women.
• High ferritin levels: may indicate iron overload, inflammation, or other conditions such as hemochromatosis, with values typically above 400 ng/mL.

Risks and Limitations

The ferritin blood test is generally a safe procedure, but it carries some risks, including:

• Bleeding or bruising at the needle site.
• Infection, although this is rare.
• Falsely elevated results due to inflammation, liver disease, or other conditions that increase ferritin production.

Special Considerations

Certain factors can affect the accuracy of the ferritin blood test, including:

• Pregnancy and menstruation, which can influence iron levels and ferritin production.
• Inflammatory conditions, such as rheumatoid arthritis or chronic infections, which can increase ferritin levels.
• Liver disease, which can affect the production and clearance of ferritin.