Do you know how your vet tests your cat to see if they have FIV or Leukemia? They typically use a "snap" test. This video is of our vet doing them for our cats. We were trying to see if we would get a false negative with this. (All that were tested we knew were leukemia positive) All the test did show the cats were positive, which was good. BUT did you know that your cat can test negative and then years later become positive even though they have zero exposure? YEAP, seriously..... so just remem