Ferritin, Serum

What is Ferritin Test?

Ferritin is a protein that stores iron in the body. The ferritin test measures the amount of ferritin in your blood, giving an indirect estimate of your total body iron stores.

Key Parameters

Why It Is Done

• Routine checkup to assess iron status
• Evaluation of unexplained fatigue, weakness, or shortness of breath
• Monitoring iron levels in patients with anemia, chronic kidney disease, or inflammatory conditions
• Screening for iron overload in patients with suspected hemochromatosis

Early Detection

The test can help identify signs of iron deficiency or iron overload, but it does not diagnose a condition on its own. A doctor interprets the result together with symptoms, history, and other tests.

What Abnormal Results Mean

• Low ferritin may indicate iron deficiency anemia, chronic disease, or blood loss.
• High ferritin can suggest iron overload, inflammation, liver disease, or malignancy.

Many factors such as diet, hydration, medications, and acute illness can affect ferritin levels.

Who Should Consider It

• Adults with unexplained fatigue or weakness
• Patients with anemia of unknown cause
• Individuals with chronic inflammatory or liver conditions
• People at risk for hemochromatosis (family history, diabetes, liver disease)

In short: Ferritin testing helps gauge your iron stores and guides further investigation when iron imbalance is suspected.

Preparation

• Fasting: No fasting required.
• If combined with fasting tests: Follow the longest fasting period required by any test in the panel.
• Procedure: A healthcare professional will draw a small amount of blood (usually 5–10 mL) from a vein in your arm using a needle. The process takes about 5 minutes.
• What to expect: A brief needle prick and a small pinch afterward. You may feel a mild sting.
• Precautions: Stay hydrated, avoid alcohol and strenuous exercise 24 hours before the test. If you are on iron supplements or certain medications, inform the clinician.
• Final note: Confirm specific preparation instructions with your doctor or the lab. This information is general educational material and not a substitute for professional medical advice.