Bacteria Identification Methods as a Factor Affecting Clinical Lab Performance

We are pleased to announce that Jennifer Wu’s poster:

“Identification methods as a factor affecting performance of clinical microbiology laboratories participating in an external quality assessment program: A cross-sectional analysis of 6 years of data” has been accepted for presentation at AMMI Canada – CACMID Annual Conference, April 9-12, 2024 in Vancouver, BC.


During a six-year period from 2017-2022, 112 PT challenges comprising 22 different sample types and 61 different bacterial species were implemented; this translated into 5883 graded test events for analysis. Multiple logistic regression techniques were employed to explore the association between the identification method and lab performance. Sample type and aerobic classification of challenge organisms were included as confounding variables. Laboratories using MALDI-TOF MS performed significantly better than laboratories using phenotypic biochemical testing (OR = 5.68 CI [3.92, 8.22]) regardless of sample type and aerobic classification.

Jennifer worked as an intern at CMPT during 2023, and we are very pleased to see the fruits of her hard work. A full research article on the topic is also ready to be submitted for publication! Keep an eye on our LinkedIn page for updates.

Congratulations Jennifera and collaborating authors: Md Saiful Alamb, Veronica Restellia,, Selvarani Vimalanathana,, Lucy A. Perronea

aCanadian Microbiology Proficiency Testing Program (CMPT), Department of Pathology and Laboratory Medicine, The University of British Columbia, Vancouver, British Columbia, Canada

bSchool of Population and Public Health, The University

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