VETlabs Canine Parvovirus (CPV) Ag/Canine Coronavirus (CCV) Ag Combo test is a sandwich lateral flow immunochromatographic assay, developed and manufactured by Bioguard Corporation, for the rapid and qualitative detection of Caine Parvovirus and Canine Coronavirus in dog's feces. The test device has a testing window, coated by an invisible T (test) zone and C (control) zone. When sample is applied into the sample well on the device, the reagent will laterally flow on the surface of the test strip. If there is enough CPV Ag/CCV Ag in the sample, a visible T band will appear. The C band should always appear after a sample is applied, indicating a valid result. By this means, the device can accurately indicate the presence of CPV Ag/CCV Ag in the specimen.