<s>[INST] Hello my boyfriend is diagnosed as ptb class 5, he already finished the xray and te result is opacity on the right upper lobe, he will undergo skin test and sputum exam tomorrow. Hopefully the result are negative... For class 5 ptb what is the percentage of acquiring it. Thanks [/INST] Hi. I can understand your concern. Any organ can involve with TB.Pulmonary TB usually presents with chronic cough more than 2 weeks duration, loss of appetite, loss of weight, evening fever.If he is having pulmonary TB and have not taken treatment for TB before, then he will require 6 months of anti-TB medicines. Along with that you will require nutritional supplements. If taken regularly your TB will be cured.There nothing like class 5 ptb it is usually classified as new or retreatment case.Don't worry, you will be alright. Hope I have solved your query. Wish you good health. Thanks. </s>