More adults are seeking autism assessments to better understand patterns in their communication, sensory experiences, and day-to-day life.
For some, this follows years of adapting to situations that feel effortful or unclear. For others, it comes after recognising similar traits in a child or family member.
An assessment provides a structured way to explore these experiences. This guide outlines what an adult autism assessment in Adelaide typically involves, so you can approach the process with clear and realistic expectations.
What Is an Autism Diagnostic Assessment for Adults?
An adult autism assessment is a structured, evidence-based process conducted by qualified clinicians. Its purpose is to assess whether your experiences and characteristics are consistent with the diagnostic criteria for Autism Spectrum Disorder (ASD), as outlined in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition.
It is not a single test. A comprehensive assessment brings together information from multiple sources, including your own account of your experiences, clinical observation, standardised tools, and, where appropriate, input from someone who knows you well.
The aim is to build a detailed understanding of how you communicate, process information, and respond to your environment across different contexts.
Screening tools such as AQ-10 or RAADS-R can be useful as an initial check, but they are not diagnostic. A formal assessment requires direct evaluation by trained clinicians.
Who Might Consider an Assessment?
Recognition of autism in adults has increased in recent years, particularly among people whose experiences were not identified earlier in life.
You may consider an assessment if you:
- Find social interaction requires ongoing effort or leaves you feeling drained
- Notice patterns in communication, routines, or sensory experiences that have been consistent over time
- Recognise similar traits in yourself after a child or family member is assessed
- Have received previous diagnoses that do not fully explain your experiences
- Are seeking clarity, support options, or workplace adjustments
Women and gender-diverse individuals have historically been under-recognised. Earlier research and diagnostic frameworks were largely based on how autism presents in boys, which has contributed to delayed identification for many people.
Not everyone who relates to these experiences will receive a diagnosis. The assessment can still help clarify patterns in areas such as communication, sensory processing, and daily functioning.
What Happens During an Adult Autism Assessment
While the exact process varies between providers, most adult autism assessments follow a similar structure.
Step 1: Referral and Initial Contact
The process may begin with a direct enquiry to a clinic or a referral from a GP, psychologist, or another health professional. With your consent, a partner or family member may assist in initiating contact.
For some adults, particularly those aged 25 and under, a GP referral may support access to Medicare rebates, depending on eligibility.
At Connect Allied Health, you can get started by contacting our team in Norwood or Modbury to discuss your situation and find out what the next steps look like for you.
Step 2: Pre-Assessment Questionnaires
Before your appointment, you will usually complete questionnaires covering areas such as communication, routines, sensory experiences, and daily functioning.
You may also be asked to nominate an informant (someone who knows you well) who can provide additional perspective, particularly about earlier life experiences. If this is not possible, the assessment can still proceed.
These questionnaires help ensure the clinical session is focused and relevant.
Step 3: Clinical Interview and Observation
The core of the assessment is a clinical interview, which typically takes around two to three hours.
This session explores your developmental history, education and work experiences, relationships, and everyday functioning. Standardised tools such as the ADOS-2 or MIGDAS-2 may be used, depending on the clinician’s approach.
The focus is on identifying patterns in communication, behaviour, and responses to different environments. There are no right or wrong answers.
Step 4: Multidisciplinary Review
Best practice in Australia, as outlined by the Autism CRC National Guideline, recommends a multidisciplinary approach.
At Connect Allied Health, assessments are completed by a psychologist and a speech pathologist working together. This allows for a more comprehensive understanding of both cognitive and communication-related factors.
All information is reviewed against DSM-5 criteria before a conclusion is reached. If further clarification is required, additional information may be requested.
Step 5: Feedback and Report
Once the assessment is complete, you will be invited to a feedback session.
This session explains the outcome of the assessment and what it means in the context of your experiences. It also includes practical insights into strengths and areas where support may be helpful.A written report is then provided, usually within two to four weeks, outlining the process, findings, and recommendations.
How to Prepare for Your Adult Autism Assessment
Preparation is generally straightforward. The focus is on helping you feel comfortable and able to share your experiences.
- Reflect on your experiences: Think about patterns in how you communicate, socialise, manage routines, and respond to sensory input. Jotting down specific examples can help you share relevant details during the interview.
- Gather background information: If you have access to old school reports, previous psychological assessments, or medical records, these can provide useful context for the clinician.
- Speak with someone who knows you well: A person who knows you well can often provide valuable support for the assessment process.
- Bring items that help you feel comfortable: For example, headphones or a fidget item
- Know there’s no preparation required: You don’t need to study or rehearse. The assessment is designed to understand your natural way of experiencing the world.
Private Adult Autism Assessment in Adelaide: Cost and Access
Private adult autism assessments in Adelaide typically range from approximately $1,400 to $2,300, depending on the provider and the complexity of the assessment.
For eligible individuals aged 25 and under, Medicare rebates may be available with a valid GP referral.
Some participants may be able to use funding from the National Disability Insurance Scheme (NDIS), depending on their individual plan and circumstances. It is best to confirm this with your support coordinator or planner.
Wait times for private assessments vary between providers. Some clinics have waitlists of several weeks to a few months.
What Happens After an Autism Diagnosis?
A diagnosis may open pathways to practical support, including access to allied health services, workplace adjustments, and community connections with other autistic adults.
For some, it may also support an application to the NDIS, though eligibility is determined on a case-by-case basis and is not guaranteed.
It’s equally important to acknowledge that not receiving a diagnosis is also a meaningful outcome.
The assessment process itself often provides valuable insights into your communication style, sensory profile, and support needs, regardless of the diagnostic conclusion.
Adult Autism Assessments at Connect Allied Health
At Connect Allied Health, we provide adult autism diagnostic assessments at our Adelaide clinics in Norwood and Modbury. Our assessment team includes a psychologist and speech pathologist who work together using a multidisciplinary approach, in line with the Autism CRC National Guideline.
We take a neurodiversity-affirming, strengths-based approach to every assessment. Our aim is to provide you with clarity, practical recommendations, and a supportive experience throughout the process.
If you’d like to learn more or discuss whether an assessment may be appropriate for your situation, you’re welcome to get in touch with our team for an initial conversation.
Phone: (08) 8337 8770
Disclaimer: This article provides general educational information about adult autism assessments. It is not a substitute for professional assessment or clinical advice. If you have questions about whether an assessment may be appropriate for you, speak with a qualified clinician.
References
Autism CRC (2018). National Guideline for the Assessment and Diagnosis of Autism Spectrum Disorders in Australia. autismcrc.com.au
American Psychiatric Association (2013). Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5).
SA Office for Autism. Pathways for Assessment. officeforautism.sa.gov.au/autism/pathways-for-diagnosis
AHPRA Guidelines for Advertising Regulated Health Services. ahpra.gov.au/Resources/Advertising-hub/
