Specifying only one test may erroneously lead cat owners and your readers to believe that such test is the only available in - clinic heartworm antigen test for use with cats. (todaysveterinarynurse.com)
When we draw blood from your pet at their yearly physical, we are testing for heartworm antigen. (cfvh.com)
[2] Immunodiagnostics (ELISA, lateral flow immunoassay, rapid immunomigration techniques) to detect heartworm antigen in the host's blood are now regularly used. (en.wikipedia.org)