This kit is based on competitive indirect immunochromatography technology, in which Erythromycin&Spiramycin&Tylosin&Tilmicocin in sample competes for the colloid gold labeled antibody with Erythromycin&Spiramycin&Tylosin&Tilmicocin coupling antigen captured on test line. Ana iya kallon sakamakon gwajin ta hanyar tsirara.