How are pituitary tumors tested?

Labs: Blood testings can determine if the tumor is increasing or decreasing hormones production/secretion.

Imaging and hormones: The pituitary controls most of the hormones in the body. When the pituitary is either too active or not working well, the hormone levels will show a major problem. Then specific imaging can be done to look carefully at the pituitary to look for a region of tumor. These tests should be done under the supervision of an expert in hormones - an endocrinologist.