Tuberculin testing for TB is no longer available. It hasn't been for several years. It is a cheap and easy way to test, but the makers of tuberculin realised there was no profit in it and simply stopped making it. So now the only way to screen for TB is by chest xray, or, in cases like this, by sputum culture. But by then of course the disease is already advanced. 
I've written about this many times, and I still believe that we need a non-profit crown corporation that will produce the many cheap and effective medications that big pharma are just not willing to provide because there is little profit in it. There are dozens of medications and test materials that could be produced at minimal cost and would bring the cost of our pharmacy budget way down. It would provide jobs for Canadians and it would be a source of cheap medications for other countries, particularly the third world.