Analysis of Blood Glucose using Impedance Technique

Abstract: This paper proposes a non invasive measurement technique to estimate the level of glucose by impedance measurement. This work presents a study of the varying concentrations of glucose using RF Impedance Spectroscopy (RIS). A cell was designed to create body environmental conditions having glucose concentration comparable to body glucose of a healthy person. The changes in the measured absorption properties due to the presence of glucose in water were examined between 1000 MHz and 4000 MHz. Results show wherever there is a change in blood glucose level, there will also be a change in the body impedance. The authors propose a quick, portable and low-cost device which could be used to monitor the level of glucose, cholesterol and other important body parameters. The device is based on the measurement of „modulus of impedance‟ at molecular resonant frequency wherein absorption coefficient varies with blood glucose concentration.

Keywords: Glucose, Impedance Measurement, RF Spectroscopy, Network Analyzer, Four-probe Technique.