FIELD: medicine.
SUBSTANCE: group of inventions relates to medical diagnostics. Electrochemical sensor contains working electrode, which contains sensitive layer in contact with conducting material of electrode; diffusion-restricting membrane layer, located above sensitive layer, where diffusion-restricting membrane layer contains linker and polymer, and counter-electrode in electrochemical contact with working electrode. Described are: electrode for application in biosensor, ensemble of analytical sensor and method of monitoring analyte level with application of ensemble of analytic sensor.
EFFECT: increased sensitivity and stability and high ratio "signal/noise".
