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Do you wonder if the storage and handling of QC materials influences the results? This article gives examples of how the temperature of the QC material and the mixing affects the measured results and explains also how this situations can be avoided.
The determination of the ‘erythrocyte sedimentation rate’ (ESR) is a commonly performed laboratory test with a traditional role. In this article, the mechanism of red blood cell aggregation and sedimentation is described, the standardised procedure is explained and we provide an update on the clinical interpretation of the ESR.
A short introduction to the concepts of metrological traceability and measurement uncertainty is given in the article for readers who are not familiar with them. It also includes a short description of the steps needed to evaluate uncertainty. The article further explains how traceability is assured for the Sysmex haematology calibrators and describes how the uncertainty of these calibrators was evaluated.