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  • Title: The diagnostic accuracy of the percentage of hypochromic red blood cells (%HYPOm) and cellular hemoglobin in reticulocytes (CHr) in differentiating iron deficiency anemia and anemia of chronic diseases.
    Author: Rehu M, Ahonen S, Punnonen K.
    Journal: Clin Chim Acta; 2011 Sep 18; 412(19-20):1809-13. PubMed ID: 21689644.
    Abstract:
    BACKGROUND: The percentages of hypochromic red blood cells (%HYPOm) and cellular hemoglobin in reticulocytes (CHr) are suggested to be useful screening markers of iron deficiency. The aim of this study was to investigate the diagnostic accuracy of %HYPOm and CHr in differentiating iron deficiency anemia (IDA) and anemia of chronic disease (ACD). METHODS: The retrospective population consisted of 58 IDA patients, 129 ACD patients and 63 controls, on whom bone marrow examination and blood count with %HYPOm and CHr had been performed. Receiver operating characteristic (ROC) analyses with area under the ROC curves (AUC) were used as statistical tests. RESULTS: AUCs for differentiating the groups using %HYPOm were as follows: IDA vs. controls 0.99, ACD vs. controls 0.85 and IDA vs. ACD 0.88. AUCs for CHr in distinguishing the groups were as follows: IDA vs. controls 0.95, ACD vs. controls 0.65 and IDA vs. ACD 0.83. CONCLUSIONS: IDA and ACD patients were efficiently differentiated by using %HYPOm and CHr. Additionally, %HYPOm was higher and CHr was lower in IDA patients and in ACD patients than in controls. Thus, %HYPOm is higher and CHr is lower not only in absolute iron deficiency, but also when iron availability for erythropoiesis is restricted.
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