We do not test anything that is staying on the farm. But, if we show out of state, each state/show/sale has their own requirements. Generally, the animal has to be tested within 30 or 60 days of the actual show/sale, so there would be a possibility that the same animal was tested more than once in a given year.
Even if I sell a breeding animal to an individual off my farm, if they live in another state, I have to contact that state & find out what the health requirements are for that state for an animal of XX age.
You cannot move cattle across state lines without health papers. Like when we go to Kentucky to show, they don't require any tests, but they do require a current health paper made out for that state (Ky). If we got stopped in Pa or Ohio (on the way down to Ky) we would have to have the health papers with us for our destination of Ky.