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Assaying test strips having different capture reagents

  • US 8,632,730 B2
  • Filed: 11/22/2005
  • Issued: 01/21/2014
  • Est. Priority Date: 11/22/2005
  • Status: Active Grant
First Claim
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1. A diagnostic test system, comprising:

  • a receptacle;

    an assay test strip positioned in the receptacle and having multiple capture regions which specifically bind to one or more target analytes and which produce a light when the target analyte is immobilized in the capture region;

    a plurality of optical detectors each having a corresponding view of a capture region and adapted to produce an electrical signal at a respective detector output in response to light produced from at least a portion of the capture region;

    signal conditioning circuits coupled between respective ones of the detector outputs and respective ones of logic inputs; and

    a logic circuit comprising;

    a plurality of logic inputs respectively coupled to the signal conditioning circuits; and

    transistors respectively coupled to the plurality of logic inputs, wherein the transistors turn on if the logic circuit inputs are charged to a voltage level that exceeds a threshold voltage of the transistors;

    wherein the logic circuit is configured to produce at least one output logic signal that corresponds to a logical combination of electrical signals produced from the capture regions and received at the plurality of logic inputs.

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