The gall bladder has no connection with a positive TB-test. Doctors test for tuberculosis using a Mantuh-test, or PPD-test. Positive PPD-tests indicate an allergy to the antigens of the germ Mycobacterium tuberculosis (TBC-germ). All people who are vaccinated against TBC (BCG-vaccine) have a positive PPD-test. Are you vaccinated against Mycobacterium tuberculosis, or not? People who became infected with Mycobacterium tuberculosis and then defeated the infection successfully also test positive for PPD. People who became infected but did not overcome the infection and became ill from TBC have a positive PPD-test, too. We can’t be sure in which group you belong. Therefore, the health department has reccommended that you take the medicines as a preventative measure against contracting TB. You can consult a specialist for TBC, a pneumophtisiologist, with further questions and concerns.