We recently purchased our first family milk cow, and ran the 3 big tests...TB, brucellosis, and Johnes. She came back positive for Johnes. (via blood test.) The positive Johnes test also caused a reaction in the TB test. My vet said that a positive Johnes test can sometimes cause a reaction in a TB test, but that we need to have the state vet out to do a different TB test just to be sure. I asked about the Johnes test, if it could be a false positive, or if she could have been vaccinated previously, which (to my understanding) would cause a "positive" test. He said it's not likely, and that I should just ship for cull. The cow is 8 or 9 years old, and has NO clinical signs of Johnes. She's fat, healthy, and giving 4 gallons a day milking, with normal cow patty poop. She is the most gentle, patient cow...perfect for what we were looking for. I hate to just ship her and be out the testing costs ($240+) and the cow, and then have to start over. Should I just have the state out (no charge to me) to retest for Johnes and TB? And if she does prove to have Johnes, is her milk safe to drink raw? The studies on Johnes/Crohns seem to be mixed, with half saying Johnes will directly cause Crohns, and the other half saying they do not. Advice please???