Aim: This study evaluated the performance characteristics of a prototype Becton Dickinson (BD) (Franklin Lakes, NJ) glucose/galactose binding protein (GGBP) sensor placed intradermally (BD-ID) or subcutaneously (BD-SC) for continuous glucose monitoring.
Materials and methods: The performance characteristics of the prototype BD GGBP sensor after intradermal or subcutaneous placement were assessed, and its accuracy was compared with that of a glucose oxidase (GOx)-based sensor and a standard laboratory method (YSI STAT2300 analyzer, Yellow Springs Instrument, Yellow Springs, OH) under glucose clamp conditions and during an off-clamp meal challenge in 40 patients with type 1 or 2 diabetes in a 12-h feasibility study.
Results: BD-ID and BD-SC sensors performed as well as or better than the GOx-based sensor (differences in median absolute percentage error 2-4 points in hyperglycemic and euglycemic regions, ≥ 10 points in the hypoglycemic region). For glucose values ≤ 100 mg/dL, the percentage of measurement values in consensus error plot Zone A was substantially higher with the GGBP sensors than the GOx-based sensor.
Conclusions: The BD prototype sensor demonstrated competitive accuracy relative to a GOx-based sensor and a YSI blood standard with a single calibration and minimal warm-up. Current development work is focused on the design and manufacture of a commercially feasible device that will include marked enhancements to device robustness and longevity.
Trial registration: ClinicalTrials.gov NCT01093833.