Visually-readable reagent test strip

Details Visually-readable reagent test strip Visually-readable reagent test strip

1996-12-31

1998-12-01

Gitomer, Ralph

Chemistry: molecular biology and microbiology

Measuring or testing process involving enzymes or...

Involving glucose or galactose

435 28, 422 55, 436170, C12Q 154, C12Q 128, G01N 2100

Patent

active

058436910

ABSTRACT:
A multilayer reagent test strip measures the concentration of analyte in a liquid sample that is applied to it. The sample is guided to a number of assay areas arrayed along the strip, where the analyte can react with a reagent to cause a color change. Each assay area also includes an inhibitor for the color-change reaction. The inhibitor concentration increases in successive assay areas; thus, the number of areas that change color is a measure of the analyte concentration. The test strip is particularly adapted for measuring glucose in a whole blood sample. In a preferred embodiment, the sample is guided to the assay areas along a path formed by crushing selected areas of a membrane, and the assay areas are uncrushed areas of the membrane.

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