Last data update: May 13, 2024. (Total: 46773 publications since 2009)
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Query Trace: Lan Thi Phong N[original query] |
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Impact of external quality assurance on the quality of Xpert MTB/RIF testing in Viet Nam
Gumma V , DeGruy K , Bennett D , Kim Thanh N , Albert H , Bond KB , Gutreuter S , Alexander H , Lan Thi Phong N , Rush TH , Viet Nhung N , Hung NV . J Clin Microbiol 2018 57 (3) Following the World Health Organization's (WHO) endorsement of the Xpert MTB/RIF (Cepheid, Sunnyvale, CA, USA) assay in 2010, Viet Nam's National TB Control Programme (NTP) began implementing GeneXpert instruments in NTP laboratories. In 2013, Viet Nam's National Tuberculosis (TB) Programme implemented an Xpert MTB/RIF External Quality Assurance (EQA) programme in collaboration with the United States Centers for Disease Control and Prevention (CDC) and the Foundation for Innovative New Diagnostics (FIND). Proficiency testing (PT) panels comprising five dried tube specimens (DTS) were sent to participating sites approximately twice per annum from October 2013 to July 2016. The number of enrolled laboratories increased from 22 to 39 during the study period. Testing accuracy was assessed by comparing reported and expected results, percentage scores were assigned, and feedback reports were provided to sites. On-site evaluation (OSE) was conducted for under-performing laboratories. Results from the first five rounds demonstrate the positive impact of PT and targeted OSE visits on testing quality. On average, for every additional round of feedback, the odds of achieving PT scores of >/=80% increased 2.04-fold (95% CI 1.39-3.00). Future work will include scale up of PT to all sites and maintaining performance of participating laboratories, while developing local panel production capacity. |
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