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Clinical Chemistry and Laboratory Medicine (CCLM)

Published in Association with the European Federation of Clinical Chemistry and Laboratory Medicine (EFLM)

Editor-in-Chief: Plebani, Mario

Ed. by Gillery, Philippe / Greaves, Ronda / Lackner, Karl J. / Lippi, Giuseppe / Melichar, Bohuslav / Payne, Deborah A. / Schlattmann, Peter


IMPACT FACTOR 2018: 3.638

CiteScore 2018: 2.44

SCImago Journal Rank (SJR) 2018: 1.191
Source Normalized Impact per Paper (SNIP) 2018: 1.205

Online
ISSN
1437-4331
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Volume 48, Issue 7

Issues

Evaluation of the TEST 1 erythrocyte sedimentation rate system and intra- and inter-laboratory quality control using new latex control materials

Choong-Hwan Cha
  • Department of Laboratory Medicine, University of Ulsan College of Medicine and Asan Medical Center, Seoul, Korea
  • Current address: Department of Laboratory Medicine, University of Ulsan College of Medicine and Gangneung Asan Hospital, Gangneung, Korea
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/ Young Joo Cha / Chan-Jeoung Park
  • Department of Laboratory Medicine, University of Ulsan College of Medicine and Asan Medical Center, Seoul, Korea
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/ Hyun Kyung Kim
  • Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea
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/ Eun-Jong Cha
  • Department of Biomedical Engineering, School of Medicine, Chungbuk National University, Cheongju, Korea
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/ Duck Hee Kim
  • Department of Laboratory Medicine, University of Ulsan College of Medicine and Asan Medical Center, Seoul, Korea
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/ Honghoon
  • Department of Laboratory Medicine, University of Ulsan College of Medicine and Asan Medical Center, Seoul, Korea
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/ Jae-Seol Jung
  • Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea
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/ Mi-Jung Kim
  • Department of Laboratory Medicine, University of Ulsan College of Medicine and Asan Medical Center, Seoul, Korea
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/ Seongsoo Jang
  • Department of Laboratory Medicine, University of Ulsan College of Medicine and Asan Medical Center, Seoul, Korea
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/ Hyun-Sook Chi
  • Department of Laboratory Medicine, University of Ulsan College of Medicine and Asan Medical Center, Seoul, Korea
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/ Dong Soon Lee
  • Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea
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Published Online: 2010-05-12 | DOI: https://doi.org/10.1515/CCLM.2010.162

Abstract

Background: The erythrocyte sedimentation rate (ESR) test has been considered to be a simple procedure, not requiring quality control (QC). However, QC is essential for accuracy and precision. We evaluated the TEST 1 ESR system and performed QC procedures using newly developed latex control materials in three hospitals.

Methods: Using tripotassium ethylenediaminetetraacetic acid blood samples (n=184), we compared TEST 1 ESR values with Westergren ESR data and evaluated intra-assay precision. Three levels of latex control materials were used to assess inter-assay precision. Reference range assessment was done using samples from 220 healthy individuals. Inter-laboratory QC with latex control materials in three hospitals was performed.

Results: Correlation between TEST 1 ESR and Westergren ESR results was good (p<0.001). Intra-assay precision [coefficients of variation (CV) 6.6%–21.7%] with patient samples and inter-assay precision (CV 0.0%–6.8%) with latex control materials were satisfactory. The reference ranges of 2–10 mm/h for males and 2–19 mm/h for females were established. Inter-laboratory QC data with latex control materials in three hospitals demonstrated good accuracy and satisfactory precision (CV 0.0%–14.4%).

Conclusions: Our results demonstrate that the TEST 1 QC is reliable and the latex control materials are valuable for inter-laboratory proficiency testing.

Clin Chem Lab Med 2010;48:1043–8.

Keywords: erythrocyte sedimentation rate; latex control; quality control; TEST 1

About the article

Corresponding authors: Young Joo Cha, MD, Department of Laboratory Medicine, Chung-Ang University Hospital, 224-1 Heukseok-1dong, Dongjak-gu, Seoul 156-755, Korea Phone: +82-2-6299-2720, Fax: +82-2-6298-8630, Chan-Jeoung Park, MD, Department of Laboratory Medicine, Asan Medical Center, 388-1 Pungnap-2dong, Songpa-gu, Seoul 138-736, Korea Phone: +82-2-3010-4508, Fax: +82-2-478-0884,


Received: 2009-10-12

Accepted: 2010-01-21

Published Online: 2010-05-12

Published in Print: 2010-07-01


Citation Information: Clinical Chemistry and Laboratory Medicine, Volume 48, Issue 7, Pages 1043–1048, ISSN (Online) 1437-4331, ISSN (Print) 1434-6621, DOI: https://doi.org/10.1515/CCLM.2010.162.

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