A blood glucose meter, also known as a blood glucose meter, is an electronic instrument used to measure blood glucose levels. Blood glucose meters are classified into two types based on their working principle: photoelectric and electrode-based. Electrode-based blood glucose meters have a more scientific testing principle, and the electrodes can be internally integrated.
Glucose measurement typically employs a three-electrode system from electrochemical analysis. The three-electrode system, as opposed to the traditional two-electrode system, includes a working electrode (WE), a reference electrode (RE), and a counter electrode (CE). The reference electrode is used to determine the zero point. Current flows through the working electrode and the reference electrode, forming a system with little or no current flow. The stability of the reference electrode potential is used to measure the electrode potential of the working electrode.
The working electrode and the auxiliary electrode form a current-flowing system, used to measure the current flowing through the working electrode. The three-electrode measurement system allows for the simultaneous study of the relationship between the potential and current at the working electrode.
