ADHD Assessment - Is it Right For You? A private assessment can last between 2 and 3 hours and includes a consultation with a specialist in ADHD. It is recommended to bring a friend or family member to help. The complete psychiatric past is assessed to determine if they exist https://andrebgwci.webbuzzfeed.com/30263603/adhd-assessment-uk-private-what-s-new-no-one-is-talking-about