ADHD assessments by experienced clinicians typically involve a comprehensive evaluation process that includes several key components including

• Clinical Interview, 
• Behavioural Observations, 
• Assessment questionnaires and well-evidenced tools such as Conners 4 / CAARS from individuals, parents / significant others and school  or workplace
• Diagnostic Criteria: using Diagnostic and Statistical Manual of Mental Disorders (DSM-5) criteria for ADHD to determine whether the individual meets the necessary criteria for diagnosis. 
• Neuropsychological Testing
•  Feedback and Recommendations:  The recommendations may encompass various treatment options, including behavioural therapy, medication, academic accommodations, and lifestyle modifications.

See our What is ADHD? or ADHD Assessment pages for more details.