Abstract

As a result of the Diabetes Control and Complications Trial, there is increased emphasis on the importance of blood glucose concentration self-monitoring for people with diabetes. The current methods for this are not ideal, and there are many other possible techniques currently under investigation. One of these techniques is microdialysis, which can be used to analyse subcutaneous interstitial glucose concentrations. A system with high recovery has recently been used to monitor glucose concentrations with sampling over one- or two-hour periods. We have investigated whether this system can be used to monitor rapid changes in blood glucose concentration in healthy volunteers with collection intervals of only ten minutes. The results show that microdialysis can be used to monitor rapidly changing blood glucose concentration, but in some subjects, dialysate glucose lagged behind the whole blood and plasma glucose concentrations to a degree that would be clinically significant. It would therefore be necessary to assess the system, comparing dialysate with plasma glucose concentrations in each individual, prior to use in a clinical setting.

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