ADHD Diagnosis - Getting the Right One From the NHS The NHS requires that people undergo a thorough evaluation in order to get the correct ADHD diagnosis. The BBC investigation revealed that a few private clinics may be giving inaccurate diagnoses and prescribing inappropriate medications. A reliable diagnosis for ADHD http://www.stes.tyc.edu.tw/xoops/modules/profile/userinfo.php?uid=1557005