ADHD Assessment - Is it Right For You? A private assessment will take up to two hours and involves a detailed medical interview with an ADHD specialist. It is helpful to bring an adult family member or friend for support, but it's not required. The entire psychiatric history is assessed https://andersonzintz.tribunablog.com/17-reasons-why-you-should-beware-of-adhd-assessment-uk-private-44255048