Diagnosis
If you have signs and symptoms that suggest you have a prolactinoma, your health care provider may recommend:
Blood tests. Blood tests can show if too much prolactin is being made. They can also show whether levels of other hormones controlled by the pituitary gland are within the standard range. A pregnancy test is typically recommended for females of childbearing age.
Brain imaging. Your provider may be able to detect a prolactinoma using a magnetic resonance imaging (MRI) scan of your brain.
Vision tests. These can determine if a prolactinoma is affecting your sight.
Your provider may also refer you for additional testing with a specialist in treating disorders that affect the endocrine glands and hormones (endocrinologist).