The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Feb. 20, 2024

Filed:

Aug. 27, 2020
Applicant:

Agamatrix, Inc., Salem, NH (US);

Inventors:

Ian Harding, Somerset, GB;

Mary Y. Lee, Jamaica Plain, MA (US);

Sandie Tan, Belmont, MA (US);

Assignee:

AgaMatrix, Inc., Salem, NH (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 33/52 (2006.01); C12Q 1/26 (2006.01);
U.S. Cl.
CPC ...
C12Q 1/26 (2013.01); G01N 33/521 (2013.01);
Abstract

A dry reagent composition that includes an active redox enzyme that oxidizes an analyte as a specific substrate to produce an inactive reduced form of the enzyme; and a salt of ferricyanide provides improved performance in electrochemical test strips such as those used for detection of glucose. The salt of ferricyanide consists of ferricyanide and positively-charged counter ions, and the positively charged counter ions are selected such that the salt of ferricyanide is soluble in water, and such that the salt of ferricyanide or the crystalline phase of the salt of ferricyanide has a solubility in water and/or a lower Eat a concentration of 100 mM than potassium ferricyanide. For example, the salt of ferricyanide may be tetramethylammonium ferricyanide.


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