DESIGN A NON-INVASIVE BLOOD GLUCOSE MONITOR USING INFRARED SPECTRUM

The incidence of Type 2 Diabetes mellitus (T2DM) is progressively escalating, and the increasing susceptibility to this ailment in India underscores the considerable health obstacle it presents to individuals and families in the country. According to International Diabetic Federation, 537 million adults are currently living with diabetes, and this will further increase to more than 700 million by 2045. T2DM is not cured, it can only be controlled with medication and/or insulin therapy. T2DM patients regularly monitor their blood glucose by glucometer, which is invasive and painful method, required blood sample and also it is cost effective for low-income group of family. In this context, our study was aimed to design a non-invasive blood glucose measuring instrument. Blood glucose monitoring was divided into invasive and non-invasive method of 10 nondiabetic persons and 10 diabetic persons. In invasive blood glucose measurement was done by glucometer and also HbA1c measured by semi-auto analyzer. Non-invasive blood glucose monitoring was performed using our own designed non-invasive glucometer using infrared (IR) of 960 nm wave length, photo diode, operational amplifier (OPAMP), and light-emitting diode (LED). From the invasive method mean blood glucose and HbA1c for nondiabetic persons are 96.20±1.24, 4.86±0.12 and for diabetic persons are 225.20±2.75, 9.41±0.38 respectively. Our own designed non-invasive glucose sensor identified only hypo and hyperglycemia when IR passed through fingertip. It has been concluded that non-invasive blood glucose sensor sensed here only qualitative manner but required more specified for quantitative measurement.