A catalytic current was observed only after the addition of glucose (25 mM) to the buffer demonstrating catalytic glucose oxidation by GOx and electron transfer from GOx to the electrode via the Os-complexes (Figure ) or Fc(MeOH)₂ (Figure and). Notably, the catalytic current in the presence of the O2-scavenger was higher compared to currents obtained under ambient conditions without the scavenger, and closely matched the current observed under inert atmosphere. This demonstrates that the O2-scavenger effectively suppresses O2 interference in glucose sensing.