PMID- 15843216 OWN - NLM STAT- MEDLINE DCOM- 20050815 LR - 20161018 IS - 1434-6621 (Print) IS - 1434-6621 (Linking) VI - 43 IP - 2 DP - 2005 TI - Measurement of reticulocyte and red blood cell indices in patients with iron deficiency anemia and beta-thalassemia minor. PG - 195-7 AB - New parameters correlated with the hemoglobin content in reticulocytes (RET-Y) and in red blood cells (RBC-Y) have been suggested as helpful in diagnosing iron deficiency anemia. We have studied RET-Y and RBC-Y indices in two groups of patients with microcytosis to verify if these parameters could be used to differentiate iron deficiency anemia from beta-thalassemia minor. Blood samples from 33 iron-deficient patients, 25 beta-thalassemic minor patients and 50 normal individuals were analyzed on a Sysmex XE-2100 instrument. A significant difference was observed in reticulocyte counting and immature reticulocyte fraction between iron deficiency anemia and beta-thalassemia minor groups, but not in RBC-X and RET-Y parameters. Reticulocyte counting was higher in beta-thalassemia minor and the immature reticulocyte fraction was higher in severe iron deficiency anemia. The ratio RET-Y/mean cell volume was tested and was significantly different when beta-thalassemia minor was compared with mild and severe iron deficiency anemia, and showed better performance than the Mentzer ratio and the Green and King function. A great overlap of RET-Y and RBC-Y individual values was observed in both groups of microcytic anemias; we conclude that these new indices may be used with caution as indicative of iron deficiency, mainly in populations where beta-thalassemia minor is frequent. FAU - Noronha, Jose F A AU - Noronha JF AD - Department of Clinical Pathology, School of Medical Sciences, State University of Campinas, Sao Paulo, Brazil. FAU - Grotto, Helena Z W AU - Grotto HZ LA - eng PT - Comparative Study PT - Journal Article PL - Germany TA - Clin Chem Lab Med JT - Clinical chemistry and laboratory medicine JID - 9806306 RN - 0 (Hemoglobins) SB - IM MH - Anemia, Iron-Deficiency/blood/*pathology MH - Cell Count MH - Diagnosis, Differential MH - Erythrocyte Indices MH - Erythrocytes/*pathology MH - Hemoglobins/analysis MH - Humans MH - Reticulocytes/*pathology MH - Sensitivity and Specificity MH - beta-Thalassemia/blood/*pathology EDAT- 2005/04/22 09:00 MHDA- 2005/08/16 09:00 CRDT- 2005/04/22 09:00 PHST- 2005/04/22 09:00 [pubmed] PHST- 2005/08/16 09:00 [medline] PHST- 2005/04/22 09:00 [entrez] AID - 10.1515/CCLM.2005.033 [doi] PST - ppublish SO - Clin Chem Lab Med. 2005;43(2):195-7. doi: 10.1515/CCLM.2005.033.