Is there a portable device that can detect sweat?

According to an article recently published in the journal Nature Biotechnology, Jason Heikenfeld, a professor at the University of Cincinnati in the United States, used a miniature portable sensor to test biological body fluids mainly based on sweat, and studied the potential of this method to detect human health.

Miniature portable patch sensor

Last year, Hackenfield Laboratories made the world's first continuous testing equipment, which can effectively collect sweat and can be carried out in a non-invasive way within a few hours. After all, the technological progress of wearable devices is still limited by human beings themselves.

After investigating the use of saliva, tears and tissue fluid, Heikenfeld concluded in the article that sweat is the most promising non-invasive detection because it provides information similar to blood and can control and measure its secretion rate.

In the new equipment laboratory of the University of California, Hackenfield and his students have been creating a new sensor on a wearable patch, which is as big as a band-aid and can stimulate sweating even when the patient is cool and resting. Sensors measure specific analytes over time, which doctors can use to determine the patient's response to drugs.