The Role of Hepcidin and an Oral Iron Absorption Test in Identifying the Root Cause of Iron-Restricted Anemia (Enter-Iron)

Abstract: Introduction: Traditional iron parameters often fail to distinguish the cause of iron-restricted anemia in patients without an obvious underlying cause. We evaluated whether an oral iron absorption test (OIAT) and hepcidin measurement could be useful diagnostic tests in these patients. Methods: We retrospectively analyzed data extracted from medical records of all patients who underwent an OIAT and hepcidin measurement, noting subsequent clinical diagnosis. Δ Iron >15 µmol/L during the OIAT and a hepcidin level below the median (or suppressed ≤0.5 nm) were considered appropriate. Results: Thirty-nine adult patients were included in the study. Sixteen patients with adequate OIAT had suppressed hepcidin levels indicative of classical iron-deficiency anemia (IDA); 59% of patients had abnormal OIAT. In this group, most patients with low hepcidin levels had anemia associated with abnormalities in the gastrointestinal tract, whereas 83.3% patients with high hepcidin levels had iron-refractory iron-deficiency anemia (IRIDA), confirmed by genetic testing. Finally, transferrin/log ferritin ratio accurately identified patients with suppressed hepcidin: AUC 0.98 [95% CI: 0.95–1.02], p < 0.001. Conclusion: OIAT differentiates between classical IDA and other types of anemia caused by abnormalities in iron absorption or systemic iron availability. Additionally, elevated hepcidin in patients with oral iron malabsorption could indicate IRIDA.

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch

Bibliographic citation
The Role of Hepcidin and an Oral Iron Absorption Test in Identifying the Root Cause of Iron-Restricted Anemia (Enter-Iron) ; volume:147 ; number:4 ; year:2024 ; pages:402-412 ; extent:11
Acta haematologica ; 147, Heft 4 (2024), 402-412 (gesamt 11)

Creator
Loveikyte, Roberta
van den Berg, Yascha
van der Meulen-de Jong, Andrea Elisabeth
Vlasveld, Lodewijk Thomas

DOI
10.1159/000535275
URN
urn:nbn:de:101:1-2408150015498.627647687117
Rights
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
14.08.2025, 10:50 AM CEST

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Associated

  • Loveikyte, Roberta
  • van den Berg, Yascha
  • van der Meulen-de Jong, Andrea Elisabeth
  • Vlasveld, Lodewijk Thomas

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