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.
Patent No.:
Date of Patent:
Nov. 23, 1993
Filed:
May. 13, 1991
Lloyd A Schick, Bristol, IN (US);
Meitak T Yip, Elkhart, IN (US);
Miles Inc., Elkhart, IN (US);
Abstract
A new and improved test device and method of determining the presence or concentration of a predetermined analyte, such as glucose, cholesterol or occult blood, in a test sample are disclosed. The test device includes a test pad comprising a suitable carrier matrix incorporating an indicator reagent composition capable of interacting with the predetermined analyte to produce a detectable or measurable response. In addition, the new and improved indicator reagent composition, comprising an indicator dye, such as a redox indicator, like a benzidine indicator; a redox mediator, such as an oxidase enzyme capable of interacting with the predetermined analyte and a peroxidase enzyme; a metal ion complex; and a cooxidant selected from the group consisting of bromate ion, chlorate ion, perchlorate ion, chromate ion, an organic oxidant like a peroxide, a hydroperoxide or a N-halo compound, and combinations thereof, is incorporated into the carrier matrix to provide a more accurate, ascorbate interference-resistant assay of a test sample for the predetermined analyte.