The present invention relates to a bio-electrode for current measurement including silicon carbide (SiC) doped at least partially with nitrogen (N). The bio-electrode for current measurement according to an embodiment of the present invention is a bio-electrode for a current measurement which is contact with an object to be analyzed, which generates a current signal by an electrochemical reaction, and includes silicon carbide (SiC) doped at least partially with nitrogen (N). The electrode may be used in a high-sensitive bio-quantification kit, a high-sensitive bio-quantification device, and an immunoassay device.