14mm under-the-skin blood testing device sends warning data to the user.

A team of EPFL scientists led by Giovanni de Micheli and Sandro Carrara have developed a 14mm implant that can wirelessly monitor substances in the bloodstream, sending data directly to a doctor's computer. The tiny device is inserted just under the skin to analyze the concentration of up to five proteins and organic acids simultaneously.

It includes five sensors, a radio transmitter, and a power delivery system. Inserted into the interstitial tissue just beneath the skin of the abdomen, legs or arms using a needle, it can remain in place for months before needing to be replaced.

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