Interpretation of External Quality Assessment Results in Clinical Laboratories and Suggested Approach on Investigating Unacceptable Results
10.3969/j.issn.1671-7414.2017.05.041
- VernacularTitle:临床实验室室间质量评价结果解释及不合格结果原因调查的建议性方法
- Author:
ting Ting LI
1
;
Wei WANG
;
jian Hai ZHAO
;
lin Fa HE
;
Kun ZHONG
;
Shuai YUAN
;
guo Zhi WANG
Author Information
1. 北京医院国家老年医学中心卫生部临床检验中心/北京市临床检验工程技术研究中心
- Keywords:
external quality assessment;
quality improvement;
commutability,reference method;
between lot variation;
error
- From:
Journal of Modern Laboratory Medicine
2017;32(5):152-156
- CountryChina
- Language:Chinese
-
Abstract:
Important objectives of external quality assessment (EQA) is to detect analytical errors and urge laboratories to take corresponding corrective actions.The paper described knowledge required to interpret EQA results and present a structured approach on how to handle unacceptable EQA results.The interpretation of EQA results depends on five key points:the control material,the target value,the number of replicates,the acceptance limits and between lot variations in reagents.When there are unacceptable EQA results,these factors may be the sources of errors.The ideal EQA sample has two important properties:having no matrix effects;having a target value established with a reference method.If either of these two criteria is not entirely fulfilled,results not related to the performance of the laboratory may arise.To help and guide the laboratories in handling an unacceptable EQA result,National Center for Clinical Laboratories has developed a preliminary investigation on the sources of errors and corrective actions for nonconforming EQA results in fifteen EQA schemes.Then a flow chart with additional comments was developed based on the investigation and the document of QMS24 to help laboratories improve quality by use of EQA results.
