Accuracy evaluation of two veterinary glucometers for use in dogs

Abstract

The glucometers (GT) are important strategy for measuring blood glucose. They must be within the specifications of ISO 15197: 2013 and evaluated by analysis of the error grid. The objective of this study was to evaluate the accuracy of two veterinary glucometers (GT1 and GT2) by comparing the blood glucose values measured in capillary blood with those provided by reference laboratory method in plasma samples, transformed or not at equivalent plasma values. In the evaluation of GT1 in capillary blood samples and the hexokinase laboratory method, the mean differences were 25.90 mg / dL and 26% of the samples fell within the limits proposed by ISO 15197: 2013. The comparison of GT1 to the estimated plasma glucose values showed a mean difference of 10.89 mg / dL and 99% of the samples were in the desired limits. Comparisons of GT2 and laboratory glucose oxidase in capillary blood samples, mean differences were 10.58 mg / dL and 22% of the samples met the ranges proposed by ISO; 15197: 2013. When evaluated by the estimated plasma glucose, the mean differences were 9.7029 mg / dL and 99% of the samples met the limits. When evaluated by the error grid, 87% of the samples evaluated by GT1 fell on the zones of errors A and B and those evaluated by GT2 presented 86% of the samples on such zones. The glucometers evaluated did not present the accuracy to measure capillary glycaemia according to the standards set in ISO 15197: 2013.