ADHD Diagnosis - Getting the Right One From the NHS The NHS requires that people undergo a thorough examination in order to receive an accurate ADHD diagnosis. The BBC investigation revealed that a few private clinics could be handing out unreliable diagnoses and inappropriate medication. A valid diagnosis of ADHD https://telegra.ph/Heres-An-Interesting-Fact-About-Private-Testing-For-ADHD-03-06