ADHD Assessment - Why it's Important to Get a Private ADHD Diagnosis Anyone who suspects that they have ADHD but hasn't been diagnosed should get an ADHD assessment. The process can last up to two sessions, and it's best to bring someone from the family or a close friend along. https://kameronhhzwa.canariblogs.com/10-things-you-learned-in-kindergarden-to-help-you-get-adhd-diagnosis-uk-private-45010349