Monitoring trends and investigating poor performance
While most Salmonella results recorded within Axio PT schemes are satisfactory, ISO/IEC 17025 requires laboratories to investigate any unsatisfactory outcome. A single result rarely explains the underlying issue ; meaningful diagnosis comes from examining performance over multiple rounds, where patterns such as persistent bias, analyst variation or matrix-linked difficulties become visible. To support this assessment, AXIO provides participating laboratories with PORTAL , a data- analysis platform that collates performance across rounds, schemes and analytes. By visualising outliers, comparing methods and assessing analyst-level trends, PORTAL helps distinguish isolated events from consistent process weaknesses. The multi-year performance data that follow illustrate how Salmonella detection varies with matrix, strain and inoculum level. PORTAL provides the tools to interpret these patterns and identify the drivers of improvement.
Using PORTAL to monitor trends and investigate root causes
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