ADHD Diagnosis - Getting the Right One From the NHS The NHS requires that patients undergo a thorough assessment for a proper ADHD diagnosis. The BBC investigation found that some private clinics might be handing inaccurate diagnoses and prescribing inappropriate treatment. A valid diagnosis for ADHD is determined by the http://www.stes.tyc.edu.tw/xoops/modules/profile/userinfo.php?uid=1373062