Abstract: A biosensor for detecting a biomarker in a bodily fluid, secretion or exudation is described that includes a first electrode, a second electrode, an electrode coating and a mechanical electrode stabilizer. The biomarker is an enzyme catalyzing a chemical reaction in which a singularity or plurality of constituents of the electrode coating are chemically altered by the breaking of covalent chemical bonds when being in contact with the same. The electrode coating can be a natural or synthetic substrate of the biomarker. The first electrode and the second electrode are electrically conductive and are kept in a substantially constant and uniform distance from each other by means of the mechanical electrode stabilizer. The exposed electrically conductive surface of at least one of the first electrode and the second electrode are substantially fully covered by the electrode coating.