Ferritin

The Ferritin test measures the level of ferritin in the blood. Ferritin is a protein that stores iron and releases it in a controlled fashion. The test is used to assess iron stores in the body and is a key indicator in diagnosing iron deficiency anemia or iron overload disorders.

1. What Is Ferritin?

• Ferritin is a blood protein that stores iron and helps regulate its release.

• Most ferritin is stored in the liver, spleen, and bone marrow, but a small amount circulates in the blood.

• The level of ferritin in the blood reflects the total amount of iron stored in the body.

2. Why Is the Ferritin Test Performed?

This test is used to:

• Diagnose iron deficiency anemia (low ferritin).

• Detect iron overload conditions (e.g., hemochromatosis).

• Monitor iron levels during treatment for anemia or chronic diseases.

• Evaluate symptoms like fatigue, weakness, or inflammation.

3. Ferritin Reference Ranges

• Men: 24 – 336 ng/mL

• Women: 11 – 307 ng/mL

• Reference ranges can vary by lab and age.

4. How to Interpret Ferritin Results

🔹 Low Ferritin:

• Indicates depleted iron stores and possible iron deficiency anemia.

• Symptoms may include fatigue, weakness, dizziness, and shortness of breath.

🔹 High Ferritin:

• May indicate iron overload, inflammation, liver disease, or certain cancers.

• Further testing (e.g., serum iron, TIBC, transferrin saturation) is needed for confirmation.

5. What Can Affect Ferritin Levels?

• Iron intake (diet or supplements)

• Chronic inflammation or infection (can falsely elevate ferritin)

• Liver disease or alcohol use

• Blood loss or gastrointestinal bleeding (can lower ferritin)

• Kidney disease or certain cancers

6. How Is the Test Performed?

• A blood sample is taken from a vein, typically with no fasting required.

• Sometimes performed alongside other iron-related tests for a complete iron panel.

7. When to See a Doctor

🚨 Contact your healthcare provider if you:

• Have unexplained fatigue, hair loss, or pale skin (possible iron deficiency).

• Have high ferritin and symptoms like joint pain or abdominal pain (possible iron overload).

• Are managing a chronic condition that could affect iron levels.

🔹 Key Takeaways

✅ Ferritin is a key marker of the body's iron storage levels.

✅ Low levels indicate iron deficiency; high levels may suggest overload or inflammation.

✅ Ferritin testing helps guide diagnosis and treatment of anemia and iron-related disorders.