If my tb skin test ran positive but i've never had tuberculosis, does that mean i have latent tb? and do i have to take antiobiotics if i do have it?

Possible exposure.: If PPD is positive than you need a screening chest xray. If xray negative than 9 months of one med inh should be taken to prevent activation of possible dormant tb.

Yes: You may want to repeat the test to make sure it is really positive. There is medication to protect you against TB for your whole life. If again positive latent tb.

Chest imaging: A chest x ray is indicated and a review of the reading of the TB skin test and the x ray report may be reviewed during a virtual Healhtap consultation online. The image may be uploaded for a second opinion. The treatment course may be determined by the reading of the test, your risk factors and symptoms. A blood test is also another diagnostic test to determine if there is TB infection.