Evidence map›Paper›PMID 36432426›Full record

ArticleNutrients2022

Threshold Ferritin Concentrations Reflecting Early Iron Deficiency Based on Hepcidin and Soluble Transferrin Receptor Serum Levels in Patients with Absolute Iron Deficiency.

Laura Tarancon-Diez, Miguel Genebat, Manuela Roman-Enry, Elena Vázquez-Alejo, Maria de la Sierra Espinar-Buitrago, Manuel Leal, Mª Ángeles Muñoz-Fernandez

Abstract read
In one paragraph

Article in Nutrients, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

18 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Review
  5. Article
  6. CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2025
    Review
  7. Article
  8. Diagnosis and management of iron deficiency in females.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2025
    Review
  9. Article
  10. Article
  11. Diagnostics: Markers of Body Iron Status.Advances in experimental medicine and biology · 2025
    Review
  12. Review
  13. Review
  14. Sex, lies, and iron deficiency: a call to change ferritin reference ranges.Hematology. American Society of Hematology. Education Program · 2023
    Article
  15. Review
  16. Article
  17. Article
  18. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Laura Tarancon-DiezImmunology Section, Laboratorio Inmuno-Biología Molecular (LIBM), Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), 28009 Madrid, Spain.ORCID 0000-0002-9528-4098
Miguel GenebatInternal Medicine Department, Hospital Fátima, 41012 Sevilla, Spain.
Manuela Roman-EnryAnAliza laboratorio, Hospital Jerez Puerta del Sur, 11408 Cádiz, Spain.
Elena Vázquez-AlejoImmunology Section, Laboratorio Inmuno-Biología Molecular (LIBM), Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), 28009 Madrid, Spain.ORCID 0000-0003-3011-9611
Maria de la Sierra Espinar-BuitragoImmunology Section, Laboratorio Inmuno-Biología Molecular (LIBM), Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), 28009 Madrid, Spain.
Manuel LealInternal Medicine Department, Hospital Viamed Santa Ángela de la Cruz, 41014 Sevilla, Spain.
Mª Ángeles Muñoz-FernandezImmunology Section, Laboratorio Inmuno-Biología Molecular (LIBM), Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), 28009 Madrid, Spain.ORCID 0000-0002-0813-4500

Funding

Instituto de Salud Carlos III CD20/00025Instituto de Salud Carlos III PI19/01638
6 · The paper itself

Abstract

(1) Background: The serum ferritin cut-off to define absolute iron deficiency is not well-established. The aim of the present study was to determine a clinically relevant ferritin threshold by using early serum biomarkers of iron deficiency such as hepcidin and the soluble transferrin receptor; (2) Methods: Two hundred and twenty-eight asymptomatic subjects attending a hospital as outpatients between 1st April 2020 and 27th February 2022 were selected. Iron metabolism parameters as part of the blood analysis were requested by their doctor and included in the study. Then, they were classified into groups according to their ferritin levels and iron-related biomarkers in serum were determined, quantified, and compared between ferritin score groups and anemic subjects. (3) Results: Serum ferritin levels below 50 ng/mL establish the point from which the serum biomarker, the soluble transferrin receptor to hepcidin ratio (sTfR/Hep ratio), begins to correlate significantly with ferritin levels. (4) Conclusion: Ferritin levels ≤ 50 ng/mL are indicative of early iron deficiency; hence, this should be considered as a clinically relevant cut-off for iron deficiency.

Indexed as

Anemia, Iron-DeficiencyIron DeficienciesBiomarkersFerritinsHepcidinsHumansIronReceptors, TransferrinBiomarkersFerritinsHepcidinsIronReceptors, Transferrinferritinhepcidiniron deficiencysoluble transferrin receptor

Identifiers

PMID36432426
PMCPMC9692751

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.