ADHD Assessment - Is it Right For You? A private assessment can take up to 2 hours, and includes a medical interview with an expert in ADHD. It is useful to bring an adult friend or family member for support, but it's not necessary. The full psychiatric past is examined https://psychiatry09702.activablog.com/29338625/adhd-assessment-uk-private-11-things-you-re-leaving-out