ADHD Assessment - Why it's Important to Get a Private ADHD Diagnosis Anyone who believes they may have ADHD but hasn't been diagnosed with it should undergo an ADHD assessment. The process can take between 2 and 3 sessions. It is suggested to bring a partner or a family member. https://damienvhqxc.canariblogs.com/the-myths-and-facts-behind-adhd-diagnosis-private-44674294