ADHD Test - Why It Is Important To Seek A Private Diagnosis If you suspect that you have ADHD You should ask your GP for the referral to a health care professional who performs ADHD tests for adults. These professionals can be psychiatrists or neuropsychologists. The process of diagnosing ADHD http://www.stes.tyc.edu.tw/xoops/modules/profile/userinfo.php?uid=1372553