#$%^&*AU2015200584A120150226.pdf#####ABSTRACT A test strip device, comprising an aperture in the test strip providing a path for a penetrating member a sample-capture structure a sample-collection structure and a transport pathway created by covering the substrate of the test strip with a cover layer which provides a two-dimensional capillary area over which the analyte spreads automatically by capillary forces and in which reagent exists within said capillary area which reacts with the analyte such that the optical properties of the two-dimensional capillary area are changed in proportion to the concentration of the analyte and measurement of said concentration is by optical reflectance, transmission, or fluorescence.