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  • Title: Evaluation of reticulocyte haemoglobin content as marker of iron deficiency and predictor of response to intravenous iron in haemodialysis patients.
    Author: Kim JM, Ihm CH, Kim HJ.
    Journal: Int J Lab Hematol; 2008 Feb; 30(1):46-52. PubMed ID: 18190467.
    Abstract:
    Because serum ferritin and transferrin saturation (TS) have a limitation in estimating iron status in haemodialysis patients, the reticulocyte haemoglobin content (CHr) has been proposed as a new tool. We investigate the accuracy of CHr in comparison with conventional tests and the relationship between changes in CHr and haemoglobin levels after therapy. We selected 140 haemodialysis patients receiving rHuEPO and intravenous iron supplementation and measured their complete blood count, CHr and iron parameters. Iron deficiency was defined as a ferritin <100 microg/l and/or a TS <20%. Hb, CHr, ferritin and TS levels were determined 1 month after therapy. Fifty-three patients were iron deficient. CHr were distributed with 33.7 +/- 1.4 pg in the iron sufficient group and with 29.9 +/- 1.9 pg in the iron deficient group (P = 0.001). The cutoff value of CHr for detecting iron deficiency was <32.4 pg. In iron deficient patients, a significant correlation was found between CHr and TS. The change in CHr after therapy was significantly larger in iron-deficient patients, and a lower baseline CHr is associated with a greater haemoglobin change. CHr is useful in screening iron status in dialysis patients, and a CHr cut-off value of 32 pg is appropriate for the assessment of iron deficiency. Moreover, CHr may serve as a predictor of the response to anaemia treatment.
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