BigPatents India

A rapid diagnostic test system or process uses a single-use module that includes a photo detector. The photo detector generates an electrical signal representing a measurement of light from a test region on a medium such as a lateral-flow strip for a binding assay. For light measurement, the tat medium can contain a labelling substance that attaches a persistent fluorescent structure such as a quantum dot to a target analyte, so that the photo detector measures fluorescent light. Multiple photo detectors and an optical system that separates or filters light of wavelengths corresponding to different fluorescent labelling substances allow simultaneous testing for multiple analytes. The single-use module can include a display or LED for visual indication of test results, or the electrical signal can be output for processing in a reusable module. (FIG. 1)