From USDA Veterinary Services
- When tuberculosis (TB) testing any species, including cattle and cervids, USDA regulations dictate ANY response to the TB test, no matter how slight, must be reported to the USDA Federal Veterinary Services office in your state or to the State Veterinarian’s office. Some sources indicate certain size parameters are reportable; however, these parameters are not recognized by the USDA. TB tests are considered “official tests”; therefore response parameters are determined by USDA APHIS Veterinary Services.