| abstract |
A sensing assembly ( 10 ), including a body ( 12 ) and one or more first indicating electrodes disposed on the body ( 26 ). The first indicating electrodes include an electrochemically active layer ( 32 ) and a layer ( 38 ) of an active functioning enzyme of a first enzyme type on top of the electrochemically active layer. Also, one or more second indicating electrodes ( 24 ) are disposed on the body and include an electrochemically active layer ( 32 ) and a layer ( 36 ) of an inactivated enzyme of the first enzyme type on top of the electrochemically active layer. A reference electrode ( 22 ) is also disposed on the body. Finally, an electrical and data processing system ( 18 ) is adapted to bias the electrodes and measure electrical signals from the electrodes, and uses said signals to determine an analyte concentration and communicates the analyte concentration to a location apart from the first and second indicating electrodes. |