Getting assessed in the US.

According to the CDC, ADHD can be diagnosed by mental-health professionals such as psychologists and psychiatrists, and by primary-care providers such as pediatricians and family physicians. That last one surprises people — but the American Academy of Pediatrics clinical guideline is written specifically for primary care, and a straightforward case is well within scope.

There is no blood test, brain scan or single questionnaire that diagnoses ADHD. A proper evaluation is a clinical process: a structured interview about current difficulties, a developmental and school history reaching back before age 12, standardised rating scales, a screen for other conditions that could explain the picture, and — where possible — input from someone who has known you a long time.

Full neuropsychological testing is not required for most adults. It's genuinely useful in complex cases or when detailed documentation is needed, but a careful clinical assessment is generally sufficient — and it costs a great deal less.

Costs vary enormously by provider type, location and depth of assessment. Reported ranges cluster roughly like this: a focused diagnostic visit with a clinical interview and rating scales in the low hundreds; a comprehensive psychological evaluation in the high hundreds to low thousands; and full neuropsychological testing running to several thousand dollars. With insurance, a covered evaluation may cost only a copay.

Most major plans cover ADHD evaluation under mental- or behavioural-health benefits, but the details decide everything. Before booking, ask your insurer four things: is this provider in-network, do I need a referral or prior authorisation, what's my copay or deductible, and is comprehensive testing covered or only a basic assessment. If cost is a barrier, university psychology training clinics often assess at reduced rates.