Accuracy of the Contour ® Next Link 2.4 blood glucose monitoring system in Japanese individuals: a single-center study

Aims Self-monitoring of blood glucose is a useful method for monitoring blood glucose. It is often a key role of a management plan to reduce glycemic variability and diabetic complications. Wireless monitoring systems to connect blood glucose and insulin pumps can facilitate glycemic control. In this study, we evaluated the accuracy of Contour ® Next Link 2.4, a blood glucose monitoring system that cooperates wirelessly with most insulin pumps, in Japanese individuals. Methods In this study, finger-stick samples from 59 individuals were collected at the Tokyo Saiseikai Central Hospital. Blood glucose concentrations were measured with the monitoring systems against an available reference. We evaluated the accuracy of the system based on the ISO 15197:2013 Section 6.3 accuracy criteria. Results In the present study, 100% of the results fulfilled the ISO 15197:2013 Section 6.3 accuracy criteria (95% within ± 15 mg/dL or ± 15% of reference for glucose < 100 and ≥ 100 mg/dL, respectively). The Parkes-Consensus Error Grid analysis showed that 100% of the results fulfilled within Zone A. Conclusions The Contour ® Next Link 2.4 blood glucose monitoring system fulfilled the ISO 15197:2013 accuracy criteria limit and the consensus error grid criterion. Therefore, this monitoring system for observing blood glucose levels is accurate for Japanese individuals.