A thyroid-stimulating hormone immuno-electrode

A non-labelled thyroid-stimulating hormone (TSH) immuno-electrode is described in this paper. The chloride electrodes are used as the basic electrode and the reference electrode. The hydroxyethyl methacrylate-methyl methacrylate copolymer was used as the membrane matrix material covering the basic electrode. The TSH immuno-electrode can be used for TSH determination up to 17.5 μIU/ml with a determination limit of 1.4 μIU/ml. The excellent selectivity of the electrode was guaranteed by the highly selective immunoreaction. The analytical results obtained corresponded satisfactorily with those obtained using the radio immunoassay procedure.