ADHD Assessment - Is it Right For You? A private assessment can take between two and three hours and involves a detailed interview with a clinical ADHD specialist. It is useful to bring with you a family member or a friend to provide support, but it's not necessary. A full https://psychiatry-in-uk15330.blog-ezine.com/29506487/the-10-scariest-things-about-adhd-assessment-uk-private