Confusion

Hey guys! I was going thru my medical paperwork for a referral for a specialist and I had " bipolar and related disorder" listed in my ongoing issues. I have had a therapist in the past strongly believe that I had bipolar disorder but I never exactly did testing or anything. What in getting at here is, is this like a normal part of getting the diagnosis? Or a diagnosis? I know there are typings and stuff. I'm just so confused.