Comparison of Impedance Platelet Count by Sysmex XE-5000 and Beckman Coulter LH 780 with Optical Fluorescent Platelet Count in Thalassemia Patients
Background: Red blood cell (RBC) abnormalities are frequently found among thalassemia patients and have been reported to be a cause of spuriously high platelet counts. Objective: To compare impedance platelet count by Sysmex XE-5000 (PLT-XE) and Beckman Coulter LH 780 (PLT-LH) with optical fluore...
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doaj-6b26ea0ff0f949a9bc0219e2b867a0152020-11-24T21:53:40ZengMahidol UniversitySiriraj Medical Journal2228-80822017-09-0169527628210.14456/smj.2017.54Comparison of Impedance Platelet Count by Sysmex XE-5000 and Beckman Coulter LH 780 with Optical Fluorescent Platelet Count in Thalassemia PatientsChaicharoen Tantanate, M.D.0Noppadol Siritanaratkul, M.D.1Department of Clinical Pathology, Faculty of Medicine Siriraj Hospital, Mahidol UniversityDepartment of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol UniversityBackground: Red blood cell (RBC) abnormalities are frequently found among thalassemia patients and have been reported to be a cause of spuriously high platelet counts. Objective: To compare impedance platelet count by Sysmex XE-5000 (PLT-XE) and Beckman Coulter LH 780 (PLT-LH) with optical fluorescent platelet count (PLT-O) in thalassemia patients. Methods: EDTA blood specimens from 152 thalassemia patients were analyzed by routine mode of PLT-XE and PLT-LH. The PLT-O run on reticulocyte mode of Sysmex XE-5000 was used as a reference method. Spearman’s rank correlation coefficient (rs ) and Bland-Altman plot were analyzed. Results: Correlations between impedance and PLT-O methods were excellent, as demonstrated by rs of 0.95 and 0.97 for PLT-XE and PLT-LH, respectively. However, there was no agreement between impedance and PLT-O methods. There were differences in biases of PLT-XE between thalassemia minor and both thalassemia intermedia and major. Compared to PLT-O, the concordance rates of diagnosis for platelet count abnormality were 94.7% and 96.7% for PLT-XE and PLT-LH, respectively. Conclusion: Compared to PLT-O, impedance method was associated with spuriously high platelet counts in thalassemia patients. Careful blood smear examination and/or accurate assay should be used in cases suspected of spuriously high platelet count.http://www.smj.si.mahidol.ac.th/sirirajmedj/index.php/smj/article/view/775/771Hematology analyzer; impedance method; optical method; platelet count; thalassemia (Siriraj Med J 2017;69: 276-282) |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Chaicharoen Tantanate, M.D. Noppadol Siritanaratkul, M.D. |
spellingShingle |
Chaicharoen Tantanate, M.D. Noppadol Siritanaratkul, M.D. Comparison of Impedance Platelet Count by Sysmex XE-5000 and Beckman Coulter LH 780 with Optical Fluorescent Platelet Count in Thalassemia Patients Siriraj Medical Journal Hematology analyzer; impedance method; optical method; platelet count; thalassemia (Siriraj Med J 2017;69: 276-282) |
author_facet |
Chaicharoen Tantanate, M.D. Noppadol Siritanaratkul, M.D. |
author_sort |
Chaicharoen Tantanate, M.D. |
title |
Comparison of Impedance Platelet Count by Sysmex XE-5000 and Beckman Coulter LH 780 with Optical Fluorescent Platelet Count in Thalassemia Patients |
title_short |
Comparison of Impedance Platelet Count by Sysmex XE-5000 and Beckman Coulter LH 780 with Optical Fluorescent Platelet Count in Thalassemia Patients |
title_full |
Comparison of Impedance Platelet Count by Sysmex XE-5000 and Beckman Coulter LH 780 with Optical Fluorescent Platelet Count in Thalassemia Patients |
title_fullStr |
Comparison of Impedance Platelet Count by Sysmex XE-5000 and Beckman Coulter LH 780 with Optical Fluorescent Platelet Count in Thalassemia Patients |
title_full_unstemmed |
Comparison of Impedance Platelet Count by Sysmex XE-5000 and Beckman Coulter LH 780 with Optical Fluorescent Platelet Count in Thalassemia Patients |
title_sort |
comparison of impedance platelet count by sysmex xe-5000 and beckman coulter lh 780 with optical fluorescent platelet count in thalassemia patients |
publisher |
Mahidol University |
series |
Siriraj Medical Journal |
issn |
2228-8082 |
publishDate |
2017-09-01 |
description |
Background: Red blood cell (RBC) abnormalities are frequently found among thalassemia patients and have been
reported to be a cause of spuriously high platelet counts.
Objective: To compare impedance platelet count by Sysmex XE-5000 (PLT-XE) and Beckman Coulter LH 780
(PLT-LH) with optical fluorescent platelet count (PLT-O) in thalassemia patients.
Methods: EDTA blood specimens from 152 thalassemia patients were analyzed by routine mode of PLT-XE and
PLT-LH. The PLT-O run on reticulocyte mode of Sysmex XE-5000 was used as a reference method. Spearman’s
rank correlation coefficient (rs
) and Bland-Altman plot were analyzed.
Results: Correlations between impedance and PLT-O methods were excellent, as demonstrated by rs
of 0.95 and
0.97 for PLT-XE and PLT-LH, respectively. However, there was no agreement between impedance and PLT-O
methods. There were differences in biases of PLT-XE between thalassemia minor and both thalassemia intermedia
and major. Compared to PLT-O, the concordance rates of diagnosis for platelet count abnormality were 94.7% and
96.7% for PLT-XE and PLT-LH, respectively.
Conclusion: Compared to PLT-O, impedance method was associated with spuriously high platelet counts in
thalassemia patients. Careful blood smear examination and/or accurate assay should be used in cases suspected of
spuriously high platelet count. |
topic |
Hematology analyzer; impedance method; optical method; platelet count; thalassemia (Siriraj Med J 2017;69: 276-282) |
url |
http://www.smj.si.mahidol.ac.th/sirirajmedj/index.php/smj/article/view/775/771 |
work_keys_str_mv |
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