Before seeing any medical specialist, it is always preferable to talk to your own family doctor, who can discuss your condition with you and advise on whether any specialist care is appropriate. If it is, he or she can help you to choose the specialist best suited to your needs. Your family doctor can help the specialist to care for you better by providing relevant information about your health. Communicating with the specialist will also enable your family doctor to care for you better during and after your specialist treatment.
During your initial visit, the doctor will explain the specific test or procedure you want, help you visualize the results and go over the risks. He may do a physical examination and ask you a bunch of questions. Once you go and have the test done then he will decide what your diagnosis and appropriate treatment.