What actually happens in an adult ADHD assessment?

The anxiety we hear most often before an assessment isn’t "what if I have ADHD" — it’s "what if I can’t explain myself properly." So here is exactly what the process involves, because a structured assessment doesn’t depend on you performing well on the day.

It starts before the appointment. You’ll complete validated questionnaires and a developmental history form at home, and where possible someone who knew you as a child adds their perspective. This means the appointment itself starts from evidence, not from a blank page.

The assessment is a structured clinical interview lasting at least 2 hours — split across more than one day if that suits you better. Your clinician works through current symptoms and — crucially — their impact across work, home, study and relationships; your childhood history; and your wider mental and physical health, because several conditions can mimic or accompany ADHD. It is a conversation, not an interrogation, and there are no trick questions.

Within ten working days you receive a full diagnostic report: the outcome, the evidence behind it, and personalised recommendations. If ADHD isn’t the right explanation, the report says so and points you towards what is — around one in five of our assessments ends that way, which is precisely what clinical independence looks like.

If you’re weighing up an assessment, our screening call is free and commits you to nothing. Twenty minutes usually answers the "is this worth pursuing?" question better than another year of wondering.