How are pituitary tumors diagnosed?

Labs and imaging: Labs (blood draw) will tell if it's a functioning tumor. Imaging studies (MRI) will show how big and what it looks like.

MRI, blood tests: The most accurate way to diagnose a pituitary tumor is by mri. Some pituitary tumors secrete hormones. Blood levels of these hormones may be checked to help diagnose a pituitary tumor as well. A tumor may be suspected if one's visual field is restricted (loss of peripheral vision).