ADHD Assessment - Is it Right For You? A private assessment could take between two and three hours and involves a detailed interview with a clinical ADHD specialist. It is helpful to bring along a friend or family member for support, but this is not required. A complete psychiatric history https://trevorziosw.blogocial.com/the-reason-why-you-re-not-succeeding-at-adhd-assessment-uk-private-65702632