Hi, My name is Eliza, I was taking the twinrix vaccine and finished my first and second dose. when should I take the third dose? Also, as I had BCG vaccine, my TB result is always showing positive. What should I provide to prove my TB result? I already have my chest x ray, but it is just the image of x-ray with no documentation. Where can I get the documentation or x-ray reading report of previously taken x-ray.