What testing options are available for Johnes disease?
There are nearly a dozen tests that can be performed to diagnose Johne’s disease. Tests that detect antibodies to M. paratuberculosis, such as the blood or milk ELISA are most often recommended as screening tests to determine the herd-level prevalence of Johne’s and identify high-risk animals. Tests that detect the M. paratuberculosis organism, like traditional fecal culture or the Rapid Fecal Test, are useful to confirm Johne’s in high-risk animals and to identify the most problematic animals for transmission.
