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Rapid self-contained assay format

  • US 5,824,268 A
  • Filed: 10/14/1997
  • Issued: 10/20/1998
  • Est. Priority Date: 05/19/1995
  • Status: Expired due to Fees
First Claim
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1. A test strip for use in determining analyte in a test sample, comprising:

  • (a) a reservoir consisting essentially of an absorbent pad;

    (b) a reaction zone lying directly above the reservoir comprising an upper surface and a lower surface, a first portion of the upper surface containing analyte binding substance and a second portion lacking the substance, and wherein the lower surface is in physical contact with the reservoir pad;

    (c) an elongated sample zone lying above and in physical contact with a portion of the upper surface of the reaction zone that does not contain analyte binding substance; and

    (d) an elongated detection reagent zone lying above and in physical contact with the portion of the upper surface of the reaction zone that does not contain analyte binding substance,wherein the sample and detection reagent zones lie opposite each other over the reaction zone with their long axes perpendicular to the physical contact between the lower surface of the reaction zone and the reservoir.

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