Question

What is the working principle behind Home blood glucose sensor?

(a) electro-physiological

(b) electrochemical

(c) chemical

(d) physio-chemical

This question was posed to me in an interview for job.

Question is from Transmission of Analog Physiological Signals Over Telephone topic in division Biomedical Telemetry of Biomedical Instrumentation

Answer 1

Correct answer is (b) electrochemical

Explanation: Home blood glucose detection sensor works on the principle of electrochemical. The biosensor in this instrument relies upon enzymes that recognize and catalyze reactions of glucose with the generation of redox – active species that are detected electrochemically.