Cited by 859Iron Metabolism and DisordersHematological disorders and diagnosticsErythropoietin and Anemia Treatment

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Serum Transferrin Receptor and Its Ratio to Serum Ferritin in the Diagnosis of Iron Deficiency

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Punnonen, Kari, Irjala, Kerttu, Rajamäki, Allan·1997·Blood

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Abstract

The objective of the study was to evaluate the diagnostic efficiency of laboratory tests, including serum transferrin receptor (TfR) measurements, in the diagnosis of iron depletion. The patient population consisted of 129 consecutive anemic patients at the University Hospital of Turku who were given a bone marrow examination. Of these patients, 48 had iron deficiency anemia (IDA), 64 anemia of chronic disease (ACD), and 17 patients had depleted iron stores and an infectious or an inflammatory condition (COMBI). Depletion of iron stores was defined as a complete absence of stainable iron in the bone marrow examination. Serum TfR concentrations were elevated in the vast majority of the IDA and COMBI patients, while in the ACD patients, the levels were within the reference limits reported earlier for healthy subjects. TfR measurement thus provided a reliable diagnosis of iron deficiency anemia (AUCROC 0.98). Serum ferritin measurement also distinguished between IDA patients and ACD patients. However, the optimal decision limit for evaluation of ferritin measurements was considerably above the conventional lower reference limits, complicating the interpretation of this parameter. Calculation of the ratio TfR/log ferritin (TfR-F Index) is a way of combining TfR and ferritin results. This ratio provided an outstanding parameter for the identification of patients with depleted iron stores (AUCROC 1.00). In anemic patients, TfR measurement is a valuable noninvasive tool for the diagnosis of iron depletion, and offers an attractive alternative to more conventional laboratory tests in the detection of depleted iron stores.

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“2E; p < 0.01), and the sTfR to log 10 ferritin ratio, an index of iron-dependent erythropoietic activity (Punnonen et al., 1997; Beguin, 2003), increased by 99% (Fig.”
Influential
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Method
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En este número
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Change of serum transferrin receptor due to malarial infection, an experiment in Plasmodium gallinaceum infected chicken model.
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Soluble Transferrin Receptor
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Background
Impact of different diagnostic thresholds and the anaemia–ferritin–transferrin receptor model on the prevalence of anaemia and impaired iron status in older people
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Diagnosis of Iron Deficiency in End‐Stage Renal Disease
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“(16) calculated the ratio of transferrin receptor and log-ferritin (TfR-F index) and found it to be a useful parameter for identifying patients with depleted iron stores.”
Background

Authors: Punnonen, K., Irjala, K., & Rajamäki, A.
Affiliations: Turku University Hospital (FI)
From the Central Laboratory, Departments of Clinical Chemistry and Hematology, University Hospital of Turku, Turku, Finland.
Venue: Blood
Publisher: American Society of Hematology
Published: 1997-02-01
Volume: 89
Issue: 3
Pages: 1052-1057
ISSN: 0006-4971 (ISSN-L)
1528-0020
DOI: 10.1182/blood.v89.3.1052
OpenAlex: W1924847619
Cited by: 859
References: 28
Citations by year: 2026: 11 · 2025: 10 · 2024: 19 · 2023: 20 · 2022: 10 · 2021: 26 · 2020: 29 · 2019: 25 · 2018: 37 · 2017: 22 · 2016: 28 · 2015: 44 · 2014: 35 · 2013: 30 · 2012: 45
FWCI: 13.83
Type: journal article
Language: en
Open access: bronze
doi.org
Locations: Blood (publishedVersion)
PubMed (publishedVersion)
Topics: Health Sciences › Medicine › Hematology › Iron Metabolism and Disorders
Health Sciences › Medicine › Hematology › Hematological disorders and diagnostics
Health Sciences › Medicine › Hematology › Erythropoietin and Anemia Treatment
Keywords: serum transferrin receptor, serum ferritin, iron deficiency anemia, anemia of chronic disease, iron depletion, diagnostic accuracy, inflammatory diseases
MeSH terms: Adult, Anemia, Blood Cell Count, Bone Marrow, Chronic Disease, Female, Ferritins, Humans, Iron, Male, Receptors, Transferrin, Staining and Labeling, Anemia, Iron-Deficiency

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Serum Transferrin Receptor and Its Ratio to Serum Ferritin in the Diagnosis of Iron Deficiency

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