Clinical Precision of Reticulocyte Hemoglobin Content as an Early Marker of Bone Marrow Response in Severe Iron Deficiency Anemia Associated with Helicobacter pylori: A Case Report

Ayman Mustafa; Maher Matar; Ibtehal Nasr Al-kaseh

doi:10.5455/CRSM.20251230102535

Case Report
Online Published: 08 Jul 2026

Case Rep Ser Med. 2026; 3(3): 40-43

doi: 10.5455/CRSM.20251230102535

Clinical Precision of Reticulocyte Hemoglobin Content as an Early Marker of Bone Marrow Response in Severe Iron Deficiency Anemia Associated with Helicobacter pylori: A Case Report

Ayman Mustafa, Maher Matar, Ibtehal Nasr Al-kaseh.

Abstract
Introduction: Early assessment of therapeutic response in iron deficiency anemia (IDA) remains challenging, as changes in total hemoglobin (Hb) concentration may require several weeks to become evident. Reticulocyte hemoglobin content (Ret Hb), also referred to as reticulocyte hemoglobin equivalent (RET-He), reflects real-time functional iron availability for erythropoiesis. Case Presentation: We report the case of a 24-year-old female with severe IDA (Hb: 10.7 g/dL, Ferritin: 3.1 ng/mL, Ret Hb: 21.6 pg) associated with Helicobacter pylori infection confirmed via stool antigen (Ag) test. Intervention: The patient was treated with two doses of intravenous ferric carboxymaltose (500 mg each) administered one week apart, followed by oral maintenance therapy with "Feblod" (iron, folic acid, B12, and vitamin C), one capsule daily for one month. Outcomes: A rapid increase in Ret Hb was observed within 72 hours of the first intravenous iron dose (rising from 21.6 pg to 28.0 pg, preceding normalization of MCV and Hb. Final serum ferritin reached 137.5 ng/mL by 17 November 2025. Conclusion: This case highlights Ret Hb as a dynamic, practical, and clinically valuable biomarker for early monitoring of bone marrow response to iron therapy. Take-home Message: A rise in Ret Hb within days confirms bone marrow response before significant changes in total Hb or MCV occur, optimizing clinical decision-making in complex IDA cases.

Key words: Iron deficiency anemia; Reticulocyte hemoglobin content; RET-He; Intravenous iron; Ferric carboxymaltose; Case report.

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How to Cite this Article

Pubmed Style

Mustafa A, Matar M, Al-kaseh IN. Clinical Precision of Reticulocyte Hemoglobin Content as an Early Marker of Bone Marrow Response in Severe Iron Deficiency Anemia Associated with Helicobacter pylori: A Case Report. Case Rep Ser Med. 2026; 3(3): 40-43. doi:10.5455/CRSM.20251230102535

Web Style

Mustafa A, Matar M, Al-kaseh IN. Clinical Precision of Reticulocyte Hemoglobin Content as an Early Marker of Bone Marrow Response in Severe Iron Deficiency Anemia Associated with Helicobacter pylori: A Case Report. https://www.wisdomgale.com/crsm/?mno=305069 [Access: July 12, 2026]. doi:10.5455/CRSM.20251230102535

AMA (American Medical Association) Style

Mustafa A, Matar M, Al-kaseh IN. Clinical Precision of Reticulocyte Hemoglobin Content as an Early Marker of Bone Marrow Response in Severe Iron Deficiency Anemia Associated with Helicobacter pylori: A Case Report. Case Rep Ser Med. 2026; 3(3): 40-43. doi:10.5455/CRSM.20251230102535

Vancouver/ICMJE Style

Mustafa A, Matar M, Al-kaseh IN. Clinical Precision of Reticulocyte Hemoglobin Content as an Early Marker of Bone Marrow Response in Severe Iron Deficiency Anemia Associated with Helicobacter pylori: A Case Report. Case Rep Ser Med. (2026), [cited July 12, 2026]; 3(3): 40-43. doi:10.5455/CRSM.20251230102535

Harvard Style

Mustafa, A., Matar, . M. & Al-kaseh, . I. N. (2026) Clinical Precision of Reticulocyte Hemoglobin Content as an Early Marker of Bone Marrow Response in Severe Iron Deficiency Anemia Associated with Helicobacter pylori: A Case Report. Case Rep Ser Med, 3 (3), 40-43. doi:10.5455/CRSM.20251230102535

Turabian Style

Mustafa, Ayman, Maher Matar, and Ibtehal Nasr Al-kaseh. 2026. Clinical Precision of Reticulocyte Hemoglobin Content as an Early Marker of Bone Marrow Response in Severe Iron Deficiency Anemia Associated with Helicobacter pylori: A Case Report. Case Reports and Series in Medicine, 3 (3), 40-43. doi:10.5455/CRSM.20251230102535

Chicago Style

Mustafa, Ayman, Maher Matar, and Ibtehal Nasr Al-kaseh. "Clinical Precision of Reticulocyte Hemoglobin Content as an Early Marker of Bone Marrow Response in Severe Iron Deficiency Anemia Associated with Helicobacter pylori: A Case Report." Case Reports and Series in Medicine 3 (2026), 40-43. doi:10.5455/CRSM.20251230102535

MLA (The Modern Language Association) Style

Mustafa, Ayman, Maher Matar, and Ibtehal Nasr Al-kaseh. "Clinical Precision of Reticulocyte Hemoglobin Content as an Early Marker of Bone Marrow Response in Severe Iron Deficiency Anemia Associated with Helicobacter pylori: A Case Report." Case Reports and Series in Medicine 3.3 (2026), 40-43. Print. doi:10.5455/CRSM.20251230102535

APA (American Psychological Association) Style

Mustafa, A., Matar, . M. & Al-kaseh, . I. N. (2026) Clinical Precision of Reticulocyte Hemoglobin Content as an Early Marker of Bone Marrow Response in Severe Iron Deficiency Anemia Associated with Helicobacter pylori: A Case Report. Case Reports and Series in Medicine, 3 (3), 40-43. doi:10.5455/CRSM.20251230102535