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Diagnostic devices method and apparatus for the controlled movement of reagents without membranes

  • US 6,271,040 B1
  • Filed: 07/30/1997
  • Issued: 08/07/2001
  • Est. Priority Date: 05/21/1992
  • Status: Expired due to Fees
First Claim
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1. An assay device comprising:

  • a housing having a top;

    a sample port for receiving a sample, the sample port located on the housing;

    a reagent within the housing and in fluid communication with the sample port, wherein the sample moves to contact the reagent, yielding a physically detectable change which correlates with the amount of a selected analyte in the sample; and

    a diagnostic element within the housing in fluid communication with the reagent, the diagnostic element comprising a biosensor that produces a signal in response to the physically detectable change.

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