||This kit uses the principle of Colloidal Gold Immunochromatography assay. It can detect Clenbuterol (CLE) in samples, such as tissue, feed, etc. After adding the sample solution into the sample well of detection card, CLE of the sample solution combine with the gold-labelled antibody, so as to prevent the combining of gold-labelled antibody with CLE conjugate on the cellulose membrane. When the concentration of CLE in the sample solution is more than the detection limit, the detect line do not show color and the result is positive. When the concentration of CLE in the sample solution is less than the detection limit, the detect line show color and the result is negative.