Pituitary adenomas can be a little tricky. Neuroendos rely on a combination of your clinical symptoms, labs and scans to diagnose.
The only thing that I can think of is by standard blood tests, what do you mean?
If you had all of the pituitary hormones done in your labs, then yes you are probably good to go. But there is always a chance that you could test "borderline" high or low if you are in an earlier stage or if you have a non-secreting adenoma like a cyst.
I would recommend that you review your labs (and get a copy) with your doctor when you see him/her next.
MRI's and CAT scans don't always pick up Pit tumors by the way.
So it's really a matter of whether you having other symptoms that make you think that you have Pituitary adenoma if all else looks ok.
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