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Sweat-Sensing Skin Patch for Pain-Free Bloodless Medical Testing

University of Illinois at Urbana-Champaign researchers introduce a new microfluidic skin patch that can collect and analyze sweat. Using colorimetric biochemical assays and integrating smartphone image capture analysis, the device detected lactate, glucose, and chloride ion concentrations in sweat as well as sweat pH while stuck to the skin of individuals during a controlled cycling test. The researchers suggest that the microfluidic devices could be used during athletic or military training and could be adapted to test other bodily fluids such as tears or saliva. It could even pave the way for a pain-free, bloodless method of prescreening people for diabetes in the future.

Topics:
Diagnostics Materials Measuring Instruments Medical Monitoring Patient Monitoring Sensors Test & Measurement

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    Transcript

    00:00:01 This wearable sensor can track the composition of your sweat and send the data to your phone. Athletes can use information from sweat to prevent fatigue before it starts. These four pads change color to measure chloride, glucose, pH, and lactate. A channel fills with sweat to gauge water loss. These indicators provide information about hydration status and electrolyte balance, as well as the total amount of water lost to sweat. The ability to quickly and easily measure these things with a phone is a huge improvement over the previous, lab-bound technologies for sweat monitoring. The sensor is rugged and flexible enough to move -- even during strenuous exercise. It may also have medical uses in the future, like tracking blood sugar without the need

    00:00:49 to collect blood. This smart little sensor is probably the first thing that actually wants to be around your sweat!