ADHD Assessment - Why it's Important to Get a Private ADHD Diagnosis Anyone who believes they may be suffering from ADHD but hasn't been diagnosed with it should undergo an ADHD assessment. The process could take up to 2 sessions. It is suggested to bring a partner or family member. https://becketthddto.pointblog.net/10-things-everyone-has-to-say-about-adhd-diagnosis-uk-private-adhd-diagnosis-uk-private-70874401