Potential Blood Sugar Test Uses Sweat, Not Blood

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Good news for people with diabetes: A new quick and painless sensor that measures blood sugar in human sweat may mean far fewer finger pricks.

, but the pain and inconvenience of daily finger pricks can be a deterrent for many.

The new sweat test isn't ready for prime time yet as large-scale studies are still needed to validate the approach, but diabetes experts not involved in the new study are cautiously optimistic. The new sensor includes a sweat-absorbing polyvinyl alcohol hydrogel that sits on a flexible plastic strip. You place your finger on the sensor for one minute and the hydrogel absorbs tiny amounts of sweat and undergoes a reaction that results in a small electrical current detected by a hand-held device.

Researchers would need to explore the interference of things like soap from hand-washing, lotions, dirt and food residue on blood sugar readings from sweat, and then there is the question of cost and complexity, he said.

 

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