Performance of the Reflocheck system used outside the laboratory by trained non‐laboratory personnel

We have tested the performance of the Reflocheck glucose monitor in both the laboratory and in hospital wards. The Reflocheck performed well in the laboratory (r=0.94, y=0.92 x + 0.64, n = 113). Results from the wards were compared by taking replicate samples onto filter paper for subsequent analysis in the laboratory. However, despite the use of trained nursing staff, 55% of results were outside the ± 20% limits of analytical acceptability. The question is raised as to the robustness and suitability of the Reflocheck system for the measurement of blood glucose outside the laboratory.