ADHD Assessment - Why it's Important to Get a Private ADHD Diagnosis The process of getting an ADHD assessment is essential for anyone who thinks they may have undiagnosed ADHD. The process may take between 2 and 3 sessions. It is recommended to bring a friend or a family member. https://louisnxdks.blogoscience.com/35463073/why-adhd-diagnosis-private-is-more-difficult-than-you-imagine