What Happens in an Autism Assessment?
If you're thinking about an autism assessment for yourself or your child, it's natural to wonder what's involved. Not knowing what to expect can make it feel more daunting than it needs to be.
In brief
- An autism assessment is a detailed look at your life, or your child's, not a test you can pass or fail.
- It usually includes questionnaires, a developmental history, an observation, and a team review.
- It looks at early childhood as well as now, and at different areas of life.
- Whatever the outcome, a good assessment should leave you with a clearer understanding and practical next steps.
This guide walks you through each step, from the first questionnaires to your report and support afterwards.
1: Checking an assessment is right for you
Before booking, your provider should check that their assessment suits your situation. This may include your age, your health, and whether an online assessment is the right fit.
An online assessment may not be suitable for now if you need urgent help with your mental health or safety. That isn't a rejection. It's about making sure you get the right care in the right setting. If you're not sure, get in touch and talk it through.
2: Sharing information before the assessment
You'll complete some questionnaires online before your appointments. They help your clinicians understand your story before you meet.
For adults, these may include
- a short screening questionnaire about autistic traits, such as the AQ-10
- a questionnaire about masking, such as the CAT-Q
- questions about your background, health, education, work and relationships
For children, these may include
- questionnaires for parents about development, behaviour and wellbeing, such as the SDQ
- a questionnaire about anxiety and mood, such as the RCADS
- a questionnaire for school, completed by a teacher who knows your child well
There are no right or wrong answers. Answer based on how things usually are, and take breaks if you need to.
3: The developmental history
Autism is a lifelong, developmental condition, so your clinicians need to understand what early childhood was like. This is usually done through a structured interview, such as the ADI-R.
- For children, the interview is with you, as your child's parent or carer. Your child doesn't need to be there.
- For adults, the interview is with an informant: someone who knew you well as a child, such as a parent, older sibling or other relative.
The interview can take around 1.5 to 2 hours, and is usually conducted by phone. If no one can remember your early childhood, the assessment can still go ahead, using other sources such as school reports, photos or your own memories.
4: The observation
Next, a trained clinician spends time with you or your child, using an ADOS-informed approach or the Autism Clinical Interview for Adults (ACIA).
- For adults, this is mainly a conversation about your interests, work, relationships and feelings, with a few short tasks.
- For children, it's a mix of activities, play and conversation, depending on their age. A parent or carer is usually nearby.
The session usually lasts around 60 minutes. There's nothing to prepare, and you can take breaks or ask questions at any time.
5: The team review
NICE guidelines recommend that autism assessments are carried out by a multidisciplinary team. This means professionals from different backgrounds bring together everything they've learned and discuss it together.
They use internationally recognised criteria (DSM-5 and ICD-11) and look at whether:
- there are differences in social communication and interaction
- there are repetitive behaviours, routines, intense interests or sensory differences
- these have been present since early childhood
- they have a real impact on daily life
- anything else might better explain what's going on, or be present alongside autism
This team review is a standard part of a good assessment. It's a quality check, not a sign that something is wrong.
6: Your outcome
You'll usually have an appointment to talk through the outcome, and have the chance to ask questions. The outcome might be:
- autism is diagnosed
- autism isn't diagnosed, with an explanation of what else might be going on and what could help
- something else is identified as well, such as ADHD or anxiety, which can occur alongside autism
Whatever the outcome, the difficulties that led you here are real, and you deserve support.
7: Your report and next steps
You'll receive a detailed written report. It explains:
- the outcome and how the team reached it
- strengths as well as challenges
- practical recommendations for home, school, college or work
You can choose to share your report with your GP, your child's school, your employer or your college, to help put support in place. Many people find it helpful to take time to process the outcome, and to connect with others who have had similar experiences.
Getting started with Raiys
Raiys works nationwide, offering online autism assessments carried out by an experienced, specialist team. With us, you can expect:
- assessments that follow NICE guidelines
- secure video appointments from your own home
- a multidisciplinary team review
- a clear, detailed report you can share with your GP, school or employer
- You'll also have access to the Raiys app, where you can securely read your report and use BeChange, our digital support programme. BeChange helps you understand your diagnosis and build practical, everyday strategies at your own pace, with resources across five areas: Mind, Resilience, Life, Move Matters and Nutrition.
If you're in crisis right now, call 999, go to A&E, or call Samaritans free on 116 123, any time of day or night.
Ready to take the next step? Find out more about our autism assessments.
Knowing what to expect can make the whole process feel more manageable. Whatever the outcome, an assessment is about understanding, and finding the support that fits.