Researchers at the University of Bath invented an adhesive patch that measures glucose for diabetics. The patch contains a miniature sensor array that measures glucose levels over a single hair follicle. It accounts for inter- and intra-skin variability and eliminates the need for a blood sample.

The study, which was published in Nature Nanotechnology, introduced a wearable device that takes clinically relevant glucose measurements periodically. An application can be used to interface with the device and alert patients when glucose levels are out of range.

The design phase is now addressing functionality. The sensor will undergo clinical trials where the number of sensors and array spacing is modified until a proof of concept is presented that is both clinically relevant and economically viable.

The smart patch concept is an ideal solution for diabetics. The millions of people currently performing daily finger prick tests could stand for an improved test method that would effectively eliminate any amount of pain or suffering.