Patent ID: 8877515

Claim:
An immunochromatography kit comprising: (i) an immunochromatographic strip, wherein a sample addition pad, a detection zone, and a water absorbent portion (a) are provided in that order on a chromatographic carrier, and a second binding substance that binds to an analyte to be detected, the analyte, or a compound having a portion similar to the analyte is immobilized on the detection zone; and (ii) an amplification solution-developing strip, wherein an amplification solution addition pad and a water absorbent portion (b) are provided in that order on an amplification solution-developing carrier, wherein (i) and (ii) overlap in such manner that the immunochromatographic strip intersects with the amplification solution-developing strip at an angle of 45 to 170 degrees, and wherein the detection zone of the immunochromatographic strip is located on a portion of the amplification solution-developing strip between the amplification solution addition pad and the water absorbent portion (b).