A method of making and using diagnostic electrodes is disclosed. The method of making involves the coating of both conductive adhesive and biocompatible pressure sensitive adhesive on to a flexible non-conductive backing material on a side that has at least a portion thereof covered with an electrically conductive surface. The method of coating the electrodes is very cost efficient and economical. The use of the electrode enjoys the advantage of controlled coating thicknesses such that both types of adhesive in their final thicknesses have contact with skin of a patient.