ADHD Assessment - Why it's Important to Get a Private ADHD Diagnosis Anyone who suspects they be suffering from ADHD but hasn't been diagnosed should get an ADHD assessment. The process may take between 2 and 3 sessions. It is best to bring along a friend or a family member. https://elliottyjllg.wssblogs.com/29861631/20-things-you-should-be-educated-about-adhd-diagnosis-uk-private