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Non-invasive Blood Glucose Measurement by a Portable Near Infrared (NIR) System  

강나루 (동덕여자대학교 약학과)
우영아 (동덕여자대학교 약학과)
차봉수 (연세대학교 의학과)
이현철 (연세대학교 의학과)
김효진 (동덕여자대학교 약학과)
Publication Information
YAKHAK HOEJI / v.46, no.5, 2002 , pp. 331-336 More about this Journal
Abstract
The purpose of this study is to develop a non-invasive blood glucose measurement method by a portable near infrared (NIR) system which was newly integrated by our lab. The portable NIR system includes a tungsten halogen lamp, a specialized reflectance fiber optic probe and a photo diode array type InGaAs detector; which was developed by a microchip technology based on the lithography. Reflectance NIR spectra of different parts of human body (finger tip, earlobe, and inner lip) were recorded by using a fiber optic probe. The spectra were collected over the spectral range 1100 ∼ 1740 nm. Partial least squares regression (PLSR) was applied for the calibration and validation for the determination of blood glucose. The calibration model from earlobe spectra presented better results, showing good correlation with a glucose oxidase method which is a mostly used standard method. This model predicted the glucose concentration for validation set with a SEP of 33 mg/dL. This study indicated the feasibility for non-invasive monitoring of blood glucose by a portable near infrared system.
Keywords
NIR; blood glucose; non-invasive; PLSR;
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