The Role of External Quality Assessment Schemes in the Determination of Plasma Drug Levels
The advent and obvious advantages of therapeutic drug monitoring in the treatment of several disease states has resulted in a vast increase in the number of laboratory requests made for the measurement of plasma levels of drugs concerned. Although stringent internal quality control helps ensure the precision of the laboratory’s results, participation in external quality assessment schemes establishes the degree of accuracy of the assay procedure employed. This article describes a typical scheme and outlines benefits from the long-term feedback of information made available to scheme coordinators.
KeywordsValproic Acid Therapeutic Drug Monitoring Assay Procedure External Quality Assessment Scheme Coordinator
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