device for determining a parameter, system for determining a parameter, and method for determining a parameter

摘要

Various devices, systems and methods for determining a parameter for and / or detecting chemical and biological substances in body fluid are described herein. A device or system may include a substrate. an active sensor having an electrical characteristic and / or a control sensor may be arranged on the substrate. In certain variations, a differential between a first active sensor signal and a second control sensor signal may be used to determine a chemical or biological parameter in the body fluid sample.