Transferrin

Key Aspects of the Transferrin Test:

• Purpose: Evaluates iron status, aids in diagnosing anemia, monitors iron overload disorders, and helps assess liver function.
• Normal Range: Generally, 170 to 370 mg/dL or 215 to 380 mg/dL, depending on the laboratory.
• Procedure: A blood sample is taken via venipuncture, often with a 12-hour fast recommended (usually morning).
• Related Tests: Frequently ordered alongside Serum Iron and Total Iron Binding Capacity (TIBC).
• What High Results Mean: Elevated levels typically indicate iron deficiency, as the body attempts to increase iron transport.
• What Low Results Mean: Low levels may indicate liver disease, malnutrition, or inflammation.

Why the Test is Done

If you have symptoms of iron deficiency (fatigue, weakness, pale skin) or iron overload (joint pain, abdominal pain, high ferritin), this test helps determine the underlying cause. It is also used to monitor the effectiveness of treatments for these conditions.

Preparation and Results

• Fasting: Often required (up to 12 hours) because iron levels can fluctuate, being highest in the morning.
• Medications: Inform your doctor if you take iron supplements, birth control pills, or have had recent blood transfusions, as these can interfere with results.
• High Levels: Often indicate iron deficiency anemia.
• Low Levels: Can be associated with liver disease, hemolytic anemia, or malnutrition.