US Patent 7226790 Method for measurement using sodium azide

Patent 7226790 was granted and assigned to ARKRAY on June, 2007 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

72267900

Patent Inventor Names

Kaori Ishimaru0

Miki Horii0

Date of Patent

June 5, 2007

Patent Application Number

104909000

Date Filed

October 9, 2002

Patent Primary Examiner

‌

Maureen M. Wallenhorst

Patent abstract

A method of measuring an analyte in a sample with excellent sensitivity using a redox reaction is provided. In this method, a reducing substance or an oxidizing substance derived from the analyte is measured in the presence of a tetrazolium compound and sodium azide using the redox reaction, and an amount of the analyte is determined from the amount of the reducing substance or oxidizing substance thus measured. The tetrazolium compound and the sodium azide are present at a ratio in a range from 20:3 to 20:12. Preferably, a solution containing the tetrazolium compound and the sodium azide is aged and then added to the sample.