PMID- 32199923 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210626 IS - 2531-1387 (Electronic) IS - 2531-1379 (Print) IS - 2531-1379 (Linking) VI - 43 IP - 2 DP - 2021 Apr-Jun TI - Use of the reticulocyte channel warmed to 41 degrees C of the XN-9000 analyzer in samples with the presence of cold agglutinins. PG - 147-155 LID - S2531-1379(20)30024-9 [pii] LID - 10.1016/j.htct.2020.01.004 [doi] AB - OBJECTIVES: The purpose of this study was to compare data obtained from the reticulocyte channel (RET channel) heated to 41 degrees C with those obtained from impedance channel (I-Channel) at room temperature in the samples with the mean corpuscular hemoglobin concentration (MCHC)<370g/L and in samples with the MCHC>370g/L, in the presence of cold agglutinins. METHODS: In this study, 60 blood samples (group 1) with the MCHC<370g/L (without cold agglutinins) and 78 blood samples (group 2) with the MCHC>370g/L (with cold agglutinins) were used to compare the two analytical channels of the XN-9000 analyzer in different preanalytical conditions. The parameters evaluated in both groups were the following: red blood cell (RBC), hemoglobin (HGB), hematocrit (HCT), mean cell volume (MCV), RBC-most frequent volume (R-MFV), mean hemoglobin concentration (MCH) and mean cellular hemoglobin concentration (MCHC). RESULTS: The results of this study showed an excellent correlation with both channels of the XN-9000 analyzer in samples with and without cold agglutinins, except for the MCHC. The bias between the values obtained in the I-channel and those obtained in the RET channel of both groups was insignificant and remained within the limits of acceptability, as reported by Ricos et al. for all considered parameters, except for MCHC. CONCLUSIONS: The presence of cold agglutinins in blood samples can be detected by a spurious lowering of the RBC count and by a spurious increase in the MCHC. The RET channel represents a great opportunity to correct the RBC count in a rapid manner without preheating. However, neither methodology can completely solve the residual presence of cold agglutinins in all samples, despite the MCHC values being < 370g/L. CI - Copyright (c) 2020 Associacao Brasileira de Hematologia, Hemoterapia e Terapia Celular. Published by Elsevier Espana, S.L.U. All rights reserved. FAU - Roccaforte, Vincenzo AU - Roccaforte V AD - ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy; Hospital Alessandro Manzoni, Lecco, Italy; University of Study Milan, Milan, Italy. Electronic address: v.roccaforte@asst-lecco.i. FAU - Sciarini, Flavia AU - Sciarini F AD - Hospital Alessandro Manzoni, Lecco, Italy. FAU - Proserpio, Vanessa AU - Proserpio V AD - Hospital Alessandro Manzoni, Lecco, Italy. FAU - Buonocore, Ruggero AU - Buonocore R AD - ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy. FAU - Zavaroni, Emanuela Marina AU - Zavaroni EM AD - ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy. FAU - Burati, Silvia AU - Burati S AD - ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy. FAU - Bussetti, Marco AU - Bussetti M AD - ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy. FAU - Liuzzi, Giammaria AU - Liuzzi G AD - ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy. FAU - Russo, Rosalba Monica AU - Russo RM AD - ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy. FAU - Porreca, Wanda Patrizia AU - Porreca WP AD - ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy. FAU - Angelis, Maria Luisa De AU - Angelis ML AD - ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy. FAU - Perno, Carlo Federico AU - Perno CF AD - ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy. FAU - Bonato, Claudio AU - Bonato C AD - Hospital Alessandro Manzoni, Lecco, Italy. FAU - Pastori, Stefano AU - Pastori S AD - ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy. LA - eng PT - Journal Article DEP - 20200306 PL - Brazil TA - Hematol Transfus Cell Ther JT - Hematology, transfusion and cell therapy JID - 101725732 PMC - PMC8211624 OTO - NOTNLM OT - Autoimmune hemolytic anemia OT - Cold agglutinins OT - RET channel OT - Sysmex OT - XN-9000 EDAT- 2020/03/23 06:00 MHDA- 2020/03/23 06:01 PMCR- 2020/03/06 CRDT- 2020/03/23 06:00 PHST- 2019/09/09 00:00 [received] PHST- 2019/11/25 00:00 [revised] PHST- 2020/01/09 00:00 [accepted] PHST- 2020/03/23 06:00 [pubmed] PHST- 2020/03/23 06:01 [medline] PHST- 2020/03/23 06:00 [entrez] PHST- 2020/03/06 00:00 [pmc-release] AID - S2531-1379(20)30024-9 [pii] AID - 10.1016/j.htct.2020.01.004 [doi] PST - ppublish SO - Hematol Transfus Cell Ther. 2021 Apr-Jun;43(2):147-155. doi: 10.1016/j.htct.2020.01.004. Epub 2020 Mar 6.