How to Get an ADHD Private Diagnosis Receiving an ADHD private diagnosis can make significant changes to your attitude, outlook and plans. However, it's not as easy as just booking an appointment. GPs aren't qualified to diagnose ADHD and are able to refer you to an assessment by a specialist. http://www.stes.tyc.edu.tw/xoops/modules/profile/userinfo.php?uid=1372560