I go to CF clinic every 4 months (more if I'm sick) for routine visit.
At each clinic:
Vitals, sputum culture, PFT, visit with doc, nutritionist, nurse and social worker
ONCE per year:
blood work drawn for vitamin levels, x-ray and maybe bone density scan if I request it
I have CFRD and have been told I don't need a re-check of oral glucose tolerance test.
I think the doc you are seeing seems more concerned with "normal" tests that you would look at with someone who doesnt' have CF. For example, when I've been to pulmonologists in the past that weren't CF experts, they've also focused a LOT on chest x-rays... Also, when I've gone to the ER with fevers, etc., they don't even bother doing sputum cultures (which they should!) and just do a chest x-ray, as that is kinda the "norm" for someone with lung disease. However, I've fought loud and hard with some of these ER docs and told them that's NOT what you base CF treatment on cause our lungs always look crappy (at least mine do).
Good luck to you... Wouldn't hurt to get a second opinion. Is there a local CF center you could visit?