Patent ID: 6599708
Filing Date: 2003-07-29
Classification: G01N,Y10S

Abstract:
An apparatus for determining the concentration of a certain metabolite occurring within a solution, said apparatus comprising:(a) a matrix providing color means, in contact with said solution, for producing a certain color, said color resulting from an interaction between said certain metabolite and an unlabeled molecule, said color evidencing said concentration of said certain metabolite, said evidence comprising a position of a boundary between two color regions occurring on said matrix as sample travels through said matrix, said position being calibrated to a standard which relates position color change to concentration of said certain metabolite in the sample; and (b) binding means for binding with a portion of said metabolite and for allowing only a portion of said binding means to bind said color means, thereby creating a boundary between two color regions of said matrix and allowing said color regions to evidence said concentration of a certain metabolite within said solution.