It has been reported by WHO that more than one-third of world population is infected with tuberculosis, implying that around 2 billion people are infected. There are two approaches used to prevent the spread of TB. The first one is the early diagnosis and treatment of active TB patients. Another approach is to identify and treat people at the stage of latent TB infection. Tuberculosis dispensaries are units where early diagnosis, outpatient’s treatment and follow-up of tuberculosis patients in Turkey are carried out. The aim of the present study was to review retrospectively the patients who underwent LTBI treatment between 1981-2011 in Ankara no four tuberculosis dispensary.