Abstract
Quality control procedures have been practised in clinical chemistry laboratories for 30 years. However, the objectives of these programmes have not always been clearly defined. Is their role only to monitor the performance achieved or to assist in improving the precision and accuracy of analyses until acceptable standards are reached? The South Australian Branch of the Australian Association of Clinical Biochemists has developed a regional programme which defines acceptable standards and directs participants' attention to imprecise and inaccurate results. Unacceptable results, using defined limits, are determined immediately after assaying the unknown sera. Computer generated reports compare each participant's results with the performance of all laboratories and the best laboratory. Unacceptable precision and accuracy are flagged and the percentage unacceptable results using defined limits is determined for each chemistry. The quality control sub-committee discusses and acts on these reports.
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