The lab-on-a-chip approach is being applied to the development of glucose meters for the early diagnosis and prevention of diabetes. An optofluidic device has enabled detection of glucose in solution, requiring only a tiny droplet of sweat. A team of researchers from The Hong Kong Polytechnic University and Zhejiang University has reported integrating fiber optic glucose sensors into a microfluidic chip, a technique that could be used to create portable, high-performance, low-cost devices for the noninvasive measurement of glucose levels. 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