ADHD Assessment - Why it's Important to Get a Private ADHD Diagnosis Anyone who suspects that they have ADHD but has not been diagnosed with it should undergo an ADHD assessment. The process can take up to two sessions and it's best to bring a family member or acquaintance along. https://privateadhdassessment13332.pointblog.net/adhd-diagnosis-private-s-history-of-adhd-diagnosis-private-in-10-milestones-70831312