https://www.prometheusbio.com/products/canine-distemper-virus-antigen-cdv-ag-test/ Canine Distemper Virus Antigen (CDV Ag) Test The CDV Ag test is a diagnostic test used to detect the presence of the canine distemper virus antigen in a dog's Secretions. The CDV Ag Test is performed by collecting a sample from the dog and then applying it to a test strip or device that contains specific antibodies. This information is crucial for diagnosing and managing canine distemper infections, as well as preventing the spread of the disease to other dogs.