Point of care diagnostic systems

A point of care system for determining results from a diagnostic or risk assessment test, comprising:

• a point of care test;
• and
• a reader for analyzing data from the test, wherein:
• the reader is a reflectance reader, comprising:
• a reader head comprising:
• a reader head body;
• a light emitting diode;
• a first fiberoptic bundle optically coupled to the light emitting diode, and adapted to transmitting light from the light emitting diode;
• a photodetector adapted for generating a reflection signal in response to reflected light;
• a second fiberoptic bundle optically coupled to the photodetector, and adapted to transmit an amount of reflected light to the photodetector;
• an aperture in the reader head body;
• and
• a plurality of fiberoptic conductor ends arranged in a sigmoidal distribution in the aperture, a first portion of the fiberoptic conductor ends comprising fiberoptic conductors of the first fiberoptic bundle, and a second portion of the fiberoptic conductor ends comprising fiberoptic conductors of the second fiberoptic bundle, the plurality of fiberoptic conductor ends being further arranged in a substantially co-planar relationship;
• and
• a reader housing comprising:
• a housing body;
• and
• a cassette slot adapted to receive a test device.

A point of care system for determining results from a diagnostic or risk assessment test, comprising:

• a point of care test;
• and
• a reflectance reader for analyzing data from the test, wherein:
• the test is an immunoassay performed on a test strip, wherein the results from the immunoassay are detectable by a change in color or other property that can be detected using the reflectance reader;
• and
• the immunoassay test strip comprises:
• (a) a conjugate pad which serves as a sample application component;
• (b) a porous or bibulous member which is capable or transporting a liquid sample along the test strip and serves as the solid support upon which the immunoreactions occur;
• and
• (c) an absorbent pad, which serves to draw liquid continuously through the device, wherein:
• the materials of the membrane system form a single fluid flow pathway and the test strip is designed to be read by the reader.

A reflectance reader, comprising:

• a reader head comprising:
• a reader head body;
• a light emitting diode;
• a first fiberoptic bundle optically coupled to the light emitting diode;
• a photodetector;
• a second fiberoptic bundle optically coupled to the photodetector;
• an aperture in the reader head body;
• a plurality of fiberoptic conductor ends arranged in a sigmoidal distribution in the aperture, a first portion of the fiberoptic conductor ends comprising fiberoptic conductors of the first fiberoptic bundle, and a second portion of the fiberoptic conductor ends comprising fiberoptic conductors of the second fiberoptic bundle.

A reader head for use in determining an amount of analyte in a sample comprising:

• a reader head body;
• a light emitting diode;
• a first fiberoptic bundle optically coupled to the light emitting diode;
• a photodetector;
• a second fiberoptic bundle optically coupled to the photodetector;
• an aperture in the reader head body;
• a plurality of fiberoptic conductor ends arranged in a sigmoidal distribution in the aperture, a first portion of the fiberoptic conductor ends comprising fiberoptic conductors of the first fiberoptic bundle, and a second portion of the fiberoptic conductor ends comprising fiberoptic conductors of the second fiberoptic bundle, the plurality of fiberoptic conductor ends being further arranged in a substantially co-planar relationship.