Abstract:

Objective To study the development of anaerobic bacterium detection and its detection quality of Shanghai medical laboratories in recent years through anaerobic bacterium detection external quality assessment. Methods The feedback results of anaerobic bacterium detection external quality assessment in Shanghai Center for Clinical Laboratory（SCCL） from 2014 to 2017 were collected,and the consistency rate of anaerobic bacterium detection was analyzed. Results The number of laboratories participating SCCL anaerobic bacterium detection external quality assessment increased from 26 in 2014 to 43 in 2017（increasing rate 60.5%）. Only 1 laboratory failed in the 1st external quality assessment in 2014,and the qualification rate was 96.2%（25/26）. The qualification rate reached 100.0% from 2015 to 2017. A total of 25 isolates of anaerobic bacteria were delivered（covering 5 genera and 15 species）. There were 17 isolates identified with the consistency rate of 100.0%,of which Peptostreptococcus 100.0%（1/1）,Propionibacterium 100.0%（1/1）,Clostridium 88.9%（8/9）,Bacteroides 46.2%（6/13） and Prevotella 100.0%（1/1）. Conclusions The number of laboratories setting anaerobic bacterium detection in Shanghai increases year by year. The overall detection ability and accuracy rate of anaerobic bacterium detection are good and high,while some laboratories' performance still should be improved. Quality control in clinical laboratories is essential to assure accuracy.

Key words: Anaerobic bacterium, External quality assessment, Quality control