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Point of care diagnostic systems

  • US 20060014302A1
  • Filed: 09/02/2005
  • Published: 01/19/2006
  • Est. Priority Date: 02/03/1998
  • Status: Abandoned Application
First Claim
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1. A method for determining results from an immunoassay, comprising:

  • (a) testing a patient sample for the presence of a target analyte indicative of a condition or risk of having the condition by reacting the sample with antibodies specific for the analyte in a sandwich assay performed on a test strip, in which one of the antibodies is labeled with a detectable label; and

    (b) detecting a reflectance signal produced by the label in a reflectance reader, wherein;

    the reflectance reader includes a reader head that comprises;

    (i) a reader head body;

    (ii) a light emitting diode (LED);

    (iii) a first fiberoptic bundle optically coupled to the light emitting diode;

    (iv) a photodetector;

    (v) a second fiberoptic bundle optically coupled to the photodetector; and

    (vi) an aperture in the reader head body, wherein fiberoptic conductor ends of the first fiberoptic bundle and fiberoptic conductor ends of the second fiberoptic bundle are arranged in a substantially co-planar relationship to form a planar surface, and the planar surface is substantially parallel to a plane at an upper surface of the test strip during reflectance signal detection, whereby light is conducted by fiberoptic bundles to the photodetector, which generates the reflectance signal indicative of an amount of reflected light; and

    the reflectance signal is indicative of the presence of the analyte.

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