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

Cited 4 time in Web of Science Cited 4 time in Scopus
Authors
Cha, Choong-Hwan; Cha, Young Joo; Park, Chan-Jeoung; Kim, Hyun Kyung; Kim, Duck Hee; Jung, Jae-Seol; Jang, Seongsoo; Lee, Dong Soon; Chi, Hyun-Sook; Kim, Mi-Jung; Hong, Hoon; Cha, Eun-Jong
Issue Date
2010-07
Publisher
WALTER DE GRUYTER & CO
Citation
CLINICAL CHEMISTRY AND LABORATORY MEDICINE; Vol.48 7; 1043-1048
Keywords
erythrocyte sedimentation ratequality controllatex controlTEST 1
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.
ISSN
1434-6621
Language
English
URI
https://hdl.handle.net/10371/76289
DOI
https://doi.org/10.1515/CCLM.2010.162
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College of Medicine/School of Medicine (의과대학/대학원)Laboratory Medicine (검사의학전공)Journal Papers (저널논문_검사의학전공)
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