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Assay test strips with multiple labels and reading same

  • US 20070231922A1
  • Filed: 09/26/2005
  • Published: 10/04/2007
  • Est. Priority Date: 04/01/2004
  • Status: Active Grant
First Claim
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1. An assay test strip, comprising:

  • a flow path for a fluid sample;

    a sample receiving zone coupled to the flow path;

    a test label that specifically binds a target analyte;

    a control label that is free of any specific binding affinity for the target analyte and has a different optical characteristic than the test label; and

    a detection zone coupled to the flow path downstream of the sample receiving zone and comprising an immobilized test reagent that specifically binds the target analyte and an immobilized control reagent that specifically binds the control label.

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