Chemistry
The Role of Redox Mediators in Electrochemical Sensors
Quick fact
Ferrocene and its derivatives are common redox mediators that can be incorporated into screen-printed electrodes, helping to lower the operating potential and avoid interference from other blood components.
Why this is interesting
You've probably used a glucose meter, but how does it turn a drop of blood into a number? The secret lies in a tiny 'helper' molecule that shuttles electrons.