Mujaji W B, Mazhindu H N, Gomo Z, Marima-Matarira H T, Samuwi C, Nyamayaro T, Bullock D G, Ratcliffe J G
Department of Chemical Pathology, University of Zimbabwe Medical School, Avondale, Harare.
Cent Afr J Med. 1994 Dec;40(12):345-8.
A pilot programme for assessing laboratory performance in clinical chemistry laboratories in Zimbabwe is described (ZEQAS). Twenty four laboratories providing patient care services participated. Eight lyphilised bovine sera were distributed over one year. Consensus values and the spread of interlaboratory agreement were calculated for each of 12 analytes and compared with results previously obtained in a large mature national EQA scheme in the UK (UK NEQAS). For all analytes except phosphate, the mean consensus value obtained in ZEQAS was between 94 and 108 pc of the UK target, although the spread of results in ZEQAS was generally two to threefold greater for individual analytes than in UK NEQAS. It is concluded the ZEQAS consensus values for the analytes surveyed provide a valid target against which individual laboratory performance can be assessed. The wide spread of results from individual laboratories suggests there is considerable scope for improving interlaboratory agreement. This is being addressed by the continuing programme, with increased interaction and production of local specimens.
本文介绍了津巴布韦临床化学实验室评估实验室性能的一个试点项目（ZEQAS）。24家提供患者护理服务的实验室参与其中。在一年时间里分发了8份冻干牛血清。计算了12种分析物中每种分析物的共识值和实验室间一致性的范围，并与之前在英国一个大型成熟的国家外部质量评估计划（UK NEQAS）中获得的结果进行了比较。除磷酸盐外，ZEQAS中获得的平均共识值在英国目标值的94%至108%之间，尽管ZEQAS中单个分析物的结果范围通常比UK NEQAS中要大两到三倍。得出的结论是，所调查分析物的ZEQAS共识值为评估单个实验室性能提供了一个有效的目标。各实验室结果的广泛差异表明，在提高实验室间一致性方面有很大的改进空间。正在通过持续开展的项目来解决这一问题，增加互动并制作本地标本。
