I was negative for it about 6 months before my trip...since then I just did one of those spit test things that is supposed to test for it. Lab came back as mixed respiratory flora but no further detail than that.
Last time I was tested was for a job and they did a skin prick test - wonder if that is more sensitive? I have a follow up with my respirologist in early March and he's supposed to be a TB expert so I'll ask for a repeat test then.