6/7/2023 0 Comments Westgard rules definitionLaboratories are subject to external environmental influences that have an impact on the way they work. Medical organisations can have internal tensions because of the dichotomy between the bureaucratic and the shadow medical structures. Organisations also have internal characteristics such as the degree of formalisation, centralisation, and complexity. Leadership is difficult to characterise but its key aspects include trust, setting an example, developing staff and critically setting the vision for the organisation. Once determined, acceptable error can be used as limits in quality control rule systems.Ī key aspect of an organisation is leadership, which links the various components of the quality system. Acceptable error can be based on various criteria biological variation is probably the most sensible. 'Average of patient normals' may develop as a usual adjunct to conventional quality control serum based programmes. Control rules are only part of a process and not an end in itself just as important are the trouble-shooting systems employed when a failure occurs. The efficiency of a rule can be gauged by inspection of a power function graph. Different quality control rules detect different analytical errors with varying levels of efficiency depending on the type of error present, its prevalence and the number of observations.
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