What is a biosensor?

We in the UppSense: The Uppsala University SensUs team are building a biosensor to detect the concentration of Valproate, an antiseizure drug, in blood plasma for the SensUs Student Competition. But what exactly is a biosensor anyway?

A biosensor is a device that can detect a specific target molecule, like measuring the concentration of medicine in your blood, and translates it to a computer signal that is easy to analyse. A biosensor works by having a biological capture element, e.g. antibodies or RNA, that interact specifically with the target molecule. The device then can detect that interaction and translates it to an electrical signal.

Biosensors aren’t very common in everyday life but play important roles in the medical field, food production and research. In upcoming posts we will explain more about biosensors and give examples of different ones.

For more information look at this clip from SensUs

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