It's really good they are testing you for that I guess you are in the US I would love to be tested for that in the UK.
RE Lactose in cheese yoghurt etc the lactose is eaten up by the bacteria so none or little is left for you to react to milk however has loads which a lot of people react to.
I've never even heard of the carbohydrate intolerance test how does that work there are hundreds if not thousands of IBDers on a diet that specifically excludes carbohydrates however I guess it would be nice to have a test to see if you are not digesting or reacting to them...
Please keep us updated on how you get on and how they do the tests.