Insights & Perspectives
Notes on proficiency testing and laboratory quality.
Practical reading for laboratories working towards reliable results and accreditation, from the UboraLife team.

Five questions to ask before you choose a proficiency testing scheme
A scheme only helps if it resembles what your laboratory actually does. Start with sample matrices, methods and reporting.
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What happens inside a proficiency testing round
From homogeneous samples to a confidential report: the steps every round follows, and why repeating them matters.
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Proficiency testing and ISO/IEC 17025: the outside check your laboratory needs
Why accreditation bodies expect evidence from beyond your own bench, and what to look for in a PT provider.
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Reading a PT report: what your z-score is telling you
Satisfactory, questionable, unsatisfactory: how to interpret performance scores and spot bias before it costs you.
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Turning PT results into measurement uncertainty evidence
Results collected round after round are more than a pass mark. They are data you can use to understand your methods.
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Pathogen proficiency testing with freeze-dried materials
How simulated enrichments let laboratories test for Salmonella, Listeria, Campylobacter and more, safely and comparably.
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