“…Over the past few decades, screen-printed carbon electrodes (SPCEs) have emerged as important analytical devices, especially for sensing and biosensing, due to their relatively low cost, ease of fabrication, versatility, and wide commercial availability [1,2,3]. However, the use of SPCEs as sensing and biosensing platforms usually requires surface treatment (e.g., mechanical polishing [3], UV–ozone [4], plasma [5], electrochemical activation [6,7], etc.) or modification of the electrode surface with catalysts (e.g., nanomaterials [8,9,10,11,12], enzymes [1,13,14], etc.)…”