Device for determination of an analyte a in body fluid
First Claim
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1. A strip for testing for the presence or concentration of an analyte in a fluid comprising:
- a support member;
a spreading layer on the first side of the support member;
a reagent layer on the spreading layer which comprises a reagent selected for the analyte of interest; and
a capillary tube on the opposite side of the support member communicating through an aperture in the support member with the spreading layer, whereby a fluid containing an analyte introduced into the tube flows through the tube and the spreading layer to contact the reagent.
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Abstract
A method of making strip for testing for the presence of an analyte generally comprises providing a support member which includes a spreading layer and a reagent layer, and a capillary in communication with the support layer and spreading layer for transporting a sample of body fluid thereto.
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Citations
18 Claims
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1. A strip for testing for the presence or concentration of an analyte in a fluid comprising:
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a support member;
a spreading layer on the first side of the support member;
a reagent layer on the spreading layer which comprises a reagent selected for the analyte of interest; and
a capillary tube on the opposite side of the support member communicating through an aperture in the support member with the spreading layer, whereby a fluid containing an analyte introduced into the tube flows through the tube and the spreading layer to contact the reagent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12)
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11. A method of testing a fluid for the presence or concentration of an analyte comprising:
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providing a test strip comprising;
a support member;
a spreading layer on the first side of the support member;
a reagent layer on the spreading layer which comprises a reagent selected for the analyte of interest; and
a capillary tube on the opposite side of the support member communicating through an aperture in the support member with the spreading layer, whereby a fluid containing an analyte introduced into the tube flows through the tube and the spreading layer to contact the reagent;
introducing sufficient fluid containing an analyte into the capillary tube to flow onto the reagent layer; and
observing or measuring the indication of the reagent. - View Dependent Claims (14, 15, 16, 17, 18)
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13. A method of making a strip for testing for the presence or concentration of an analyte in a fluid comprising:
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providing a support member with a capillary tube positioned on one side of the support member and communicating with the opposite side of the support member through an aperture in the support member;
mounting a spreading layer on the opposite side of the support member and in communication with the aperture in the support member; and
mounting a reagent layer on the spreading layer.
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Specification