A wearable sensor resembling a fitness tracker that measures glucose levels throughout the day could make life much easier for diabetics.
To check their glucose levels, diabetics currently use a lancing device to draw blood, collect a drop of blood on a testing strip, insert the strip into a meter, and then wait for the blood glucose level to appear on the meter’s display. The sensors are based on a faradaic charge transfer mechanism. Glucose in blood reacts with the glucose oxidase enzyme on the sensor to form hydrogen peroxide. The hydrogen peroxide breaks down, releasing electrons, which create a current that can be measured and correlated with glucose concentration. To produce a high enough current for accurate detection, a relatively large sample volume, such as that of a drop of blood, is required.
That widely used technique is invasive and time-consuming, prompting researchers worldwide to look for a better method.
Would you like to reuse content from CEP Magazine? It’s easy to request permission to reuse content. Simply click here to connect instantly to licensing services, where you can choose from a list of options regarding how you would like to reuse the desired content and complete the transaction.