System for analyzing quantitative lateral flow chromatography

A system for determining the presence and content of an analyte in a test sample subjected to lateral flow chromatography, the system comprising

• a test device adapted to house a lateral flow test which test device further displays one or more reference images and a region of interest of said lateral flow test which bears one or more visible response zones indicating the presence and content of said analyte in said test sample and a control zone, and
• a portable processor device comprising a digital camera, a source of light and a processor, wherein said processor is configured to process digital images captured by said camera and to represent an analytical result, wherein:
• said processor is configured to analyze sequentially a plurality of transient digital images for the presence of one or more permanent reference images and, if found and correct, to determine the distance between the found reference image and the digital camera, and if within an accepted distance,
• said processor is configured to analyze each transient digital image for said region of interest, and if found;
• said processor is configured to examine each region of interest for its measures of light reflected;
• and if in line with predefined measures;
• and
• said processor is configured to retrieve and save said transient digital image so that digital images of the region of interest only will be processed and analyzed for the optical intensities of said zones which are based on predefined light conditions.