US Patent 7381539 Method of assay by oxidation-reduction reaction with formazan

Patent 7381539 was granted and assigned to ARKRAY on June, 2008 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

ARKRAY

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7381539

Date of Patent

June 3, 2008

Patent Application Number

10515715

Date Filed

April 28, 2003

Patent Primary Examiner

‌

Jon P Weber

Patent abstract

The present invention provides a highly reliable method of measuring an analyte in a sample using a redox reaction. In this method, a formazan compound is added to a sample prior to a redox reaction so as to eliminate the influence of any reducing substance in the sample. Thereafter, a reducing substance or an oxidizing substance derived from the analyte is formed, and the amount of the formed substance is measured by the redox reaction. The amount of the analyte is determined from the amount of the formed substance thus measured. As the formazan compound, for example, 1-(4-iodophenyl)-3-(2,4-disulfophenyl)-5-(2,4-dinitrophenyl) formazan can be used.