hi everyone, i would like to verify some issue. i had my x-ray last week, they have found out that, that i have TB in my upper left lung, I was not convinced on it, I did my 2nd xray, it says that " no chest finding". so sputum test was suggested.yet i don't have sputum. So, is the the next step is skin test?pls help. I am 23 5'4 in height.