User:Rthyghr654

An assay device CHNS分析 for the performance of assays for analytes, particularly those of biological interest, provides for improved efficiency and sensitivity by reduction of background. The assay device performs an immunochromatographic assay and also provides a wash to get rid of unbound labeled specific binding partner and thereby reduce the background. Assay devices based on the present invention can use either a directly visible label such as a metal sol label or an enzyme label. One embodiment of assay devices according to the present invention is especially suitable for assay of analytes in whole blood samples. The present invention also encompasses test kits and ways of use of the assay devices.