Laboratory Medicine ›› 2017, Vol. 32 ›› Issue (3): 229-233.DOI: 10.3969/j.issn.1673-8640.2017.03.017

• Orginal Article • Previous Articles     Next Articles

External quality assessment for clopidogrel therapy-related genotyping in Shanghai

BAO Yun, XIAO Yanqun, JIANG Lingli, WANG Xueliang, YANG Yixiao, WANG Hualiang   

  1. Shanghai Center for Clinical Laboratory,Shanghai 200126,China
  • Received:2016-09-05 Online:2017-03-30 Published:2017-04-11

Abstract:

Objective Through external quality assessment for clopidogrel therapy-related genotyping for cytochrome P450 2C19(CYP2C19)*2,*3 and *17,to evaluate and discuss the problems in clinical laboratories participated in the programs. Methods The sample panel of external quality assessment 2015 contained 2 different groups,and each group consisted of 5 different samples. Participating laboratories were asked to report the results before deadlines. The scores of these laboratories were calculated based on their results,and the overall coincidence rates of different loci,methods and reagents were calculated. Results External quality assessment 2015 for clopidogrel therapy-related genotyping was set twice a year. A total of 16 and 17 valid laboratory results were received respectively. About 93.75% and 88.24% of the laboratories submitted correct results for all samples. The overall coincidence rates of CYP2C19 *2,*3 and *17 were 95.00%,95.00%,100.00% and 98.82%,98.82%,95.00%,respectively. The laboratories using laboratory-developed tests accounted for 37.5% and 35.3% of all participating laboratories,of which 83.33% and 83.33% of them got full marks in 2 programs of external quality assessment 2015. Meanwhile,100% and 90.91% of laboratories using registered reagents got full marks. Conclusions The overall accuracy rate of participating laboratories is high,while some laboratories' performance still needs to be improved. Quality controls in clinical laboratories are essential to assure the accuracy of results.

Key words: Clopidogrel, Cytochrome P450 2C19, Genotyping, External quality assessment

CLC Number: