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Home blood glucose sensor works on which principle?

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Home blood glucose sensor works on which principle?

(a) electro-physiological

(b) electrochemical

(c) physio-chemical

(d) chemical

I have been asked this question during a job interview.

The query is from Biosensors topic in portion Physiological Transducers of Biomedical Instrumentation

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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 recognise and catalyze reactions of glucose with the generation of redox – active species that are detected electrochemically.

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