Patent ID: 8445293

Claim:
A method for detecting an analyte in a sample, comprising the steps of: a) applying the sample to a sample application zone of a lateral flow chromatographic test strip; b) laterally eluting at least one mobile capturing reagent located in a capturing zone, wherein the capturing zone is located upstream of the sample application zone on the lateral flow chromatographic test strip, such that the mobile capturing reagent travels downstream to encounter the sample; c) if at least one interfering substance is present in the sample, capturing the interfering substance, wherein the mobile capturing reagent interacts with the interfering substance to separate the interfering substance from the analyte and keep the interfering substance from interfering with a detection of the analyte; and d) detecting the analyte on a detection zone of the lateral flow chromatographic test strip comprising at least one test zone comprising at least one detection reagent, wherein the detection reagent complexes with and immobilizes the analyte or an antibody against the analyte at the test zone and wherein the detection zone is located downstream of the sample application zone.