Good morning Doc.im JOSEPH GAVIOLA, 22 years old,65 KG 5 1 ,last month in 2016 i have seen my x ray result koch lesion right upper lobe.but i don t have a cough,fever,but problem are i have a back pain while exhalation.but in medication i need to test gene expert.also my saliva result is negative .so my concern now is i need to take a anti tuberculosis medicine,if the result is either negative or positive?,I need my x ray result for my apprentice because im onboard in the overseas.tnx doc