ADHD Assessment - Is it Right For You? A private assessment can take up to two hours and involves a comprehensive medical interview with an ADHD specialist. It is useful to bring with you a friend or family member for support, but this is not required. A complete psychiatric record https://psychiatry-uk22643.tinyblogging.com/17-signs-to-know-you-work-with-adhd-assessment-uk-private-73603188