Concentrations of certain chemicals in exhaled breath can reveal blood glucose levels, a study found. The concentrations of acetone, propane, methanol, and 2-pentyl nitrate in breath correlated strongly with blood glucose levels over a wide range. Though the project is at a very early stage, the authors say, its goal is to develop a portable, lightweight, and inexpensive breath-testing device that could replace traditional blood glucose meters—and finger sticks. Only normal and high blood glucose were tested in this study; future research will try the breath test with low blood glucose.
Source: American Journal of Physiology–Endocrinology and Metabolism, April 2011
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