| abstract |
A method for determining a substance in a sample through an oxidation-reduction reaction, which gives found values with excellent reliability. Prior to the oxidation-reduction reaction, at least either of a sulfonic acid compound and a nitro compound is added to the sample to eliminate the influence of hemoglobin and any hemoglobin decomposition products as reducible substances contained in the sample. Subsequently, a reduction or oxidation product derived from the substance to be assayed is caused to generate, and the amount thereof is measured by an oxidation-reduction reaction. The amount of the substance to be assayed is determined from the found value. The sulfonic acid compound may be sodium lauryl sulfate, and the nitro compound may be 4-nitrophenol, etc. |