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A Proficiency Score for Assessing the Reliability of Self Blood Glucose Monitoring

The reliability of self blood glucose analysis was studied in 83 insulin‐treated diabetic patients. Reliability was assessed by laboratory analysis of capillary blood samples collected simultaneously on filter paper. Patient and laboratory results were compared using a scoring system which produces an easily understood Proficiency Score. The score was designed to highlight unreliable performance in measuring glucose concentrations in the euglycaemic as well as hypo‐ and hyperglycaemic ranges. Only 17 % of patients achieved acceptable Proficiency Scores by maintaining adequate performance on five occasions.