【Detection principle】 This product uses fluorescence immunochromatography to quantitatively detect the content of CCV in dog feces. Basic principle: T and C lines are marked on the nitrocellulose membrane, and the T-line is coated with an antibody a that specifically recognizes CCV antigen. The binding pad is sprayed with another fluorescent nanomaterial-labeled antibody b that can specifically recognize CCV. The CCV in the sample is first combined with the nano-material-labeled antibody b to form a complex, which is then chromatographed upwards. The complex and T-line antibody a Combined to form a sandwich structure, when the excitation light is irradiated, the nanomaterial emits a fluorescent signal, and the strength of the signal is positively correlated with the concentration of CCV in the sample.