Overview: Hepcidin TestIntroduction: The Hepcidin Test measures hepcidin levels to diagnose iron metabolism disorders, causing fatigue or anemia. Following 2023 ASH guidelines, it uses an immunoassay for high sensitivity, aiding in hematological screening. This test is critical for guiding diagnosis, treatment, and improving outcomes in biochemistry for patients with suspected iron overload (e.g., hemochromatosis) or anemia of inflammation, ensuring targeted therapy.
Other Names: Hepcidin Assay, Iron Regulation Test.
FDA Status: Laboratory-developed test (LDT), meeting biochemistry standards for diagnostic accuracy.
Historical Milestone: Hepcidin testing began in the 2000s with iron metabolism research. Immunoassays improved in the 2010s, enhancing diagnostic accuracy for iron disorders.
Purpose: Diagnoses iron metabolism disorders, guides treatment, and monitors hepcidin levels in patients with fatigue or anemia.
Test Parameters: 1. Hepcidin
Pretest Condition: Fasting for 10-12 hours required to stabilize iron metabolism markers. Collect serum or plasma in the morning. Report symptoms like fatigue or pallor, and list medications.
Specimen: 2-5 mL serum (SST) or 2-4 mL plasma (EDTA). Centrifuge within 1 hour. Transport in a biohazard bag within 8 hours.
Sample Stability at Room Temperature: 8 hours
Sample Stability at Refrigeration: 7 days
Sample Stability at Frozen: 6 months
Medical History: Document fatigue, pallor, or history of iron overload or anemia. Include current medications, especially iron supplements or chelators, and recent transfusions.
Consent: Written consent required, detailing the tests purpose, diagnostic implications, and potential need for iron therapy or chelation.
Procedural Considerations: Uses an immunoassay to measure hepcidin levels. Results are available in 1-2 days, enabling rapid clinical decisions. Performed in laboratories, often for hemochromatosis or anemia evaluation.
Factors Affecting Result Accuracy: Non-fasting, inflammation, or medications (e.g., iron supplements) can affect results. Hemolysis or improper storage may alter levels.
Clinical Significance: Elevated hepcidin suggests anemia of inflammation, while low levels indicate iron overload (e.g., hemochromatosis), guiding therapy. Normal levels may require further testing.
Specialist Consultation: Consult a hematologist for result interpretation and iron metabolism management.
Additional Supporting Tests: Ferritin, TIBC, serum iron, or transferrin saturation to confirm iron metabolism disorders.
Test Limitations: Hepcidin levels may be non-specific in inflammation or infection. Clinical correlation and additional testing are needed.
References: ASH Iron Metabolism Guidelines, 2023; Blood, Ganz T, 2022.
