Fluid conducting test strip with transport medium

Details Fluid conducting test strip with transport medium Fluid conducting test strip with transport medium

1995-06-22

1999-10-19

Alexander, Lyle A.

Chemistry: analytical and immunological testing

Optical result

With reagent in absorbent or bibulous substrate

422 56, 422 58, 422 61, 436178, G01N 2177

Patent

active

059688360

ABSTRACT:
A reagent strip is provided for measuring the concentration of an analyte in a liquid test sample, such as glucose or cholesterol in whole blood. The reagent strip includes a testing pad containing a color-forming reagent system specific to the analyte. The testing pad is disposed so that a side with relatively small pores defines a testing surface and an opposite side with relatively larger pores defines a sample-receiving surface. A porous sample transport medium is attached to the sample-receiving surface. A change in coloration caused by the color-forming reagent system at the testing surface is quantitatively related to the concentration of the analyte in the liquid test sample. The reagent strip may optionally include a rigid support member which facilitates evaluation of the change in coloration by mechanical viewing means. Also provided is a method for determining the concentration of an analyte in a liquid test sample.

REFERENCES:
patent: 3607093 (1971-09-01), Stone
patent: 4774192 (1988-09-01), Terminiello et al.
patent: 4824639 (1989-04-01), Hildenbrand et al.
patent: 4935346 (1990-06-01), Phillips et al.
patent: 4987085 (1991-01-01), Allen et al.
patent: 4994238 (1991-02-01), Daffern et al.
patent: 5135716 (1992-08-01), Thakare
patent: 5240862 (1993-08-01), Koenhen et al.

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