Asperger’s syndrome is no longer diagnosed as a separate condition. Since 2013, it falls under the broader diagnosis of autism spectrum disorder (ASD), which means the testing process today is an autism evaluation. The good news: the assessment itself is well-established, and adults, teens, and children can all be evaluated. Here’s what the process looks like from start to finish.
Why “Asperger’s” Is Now Autism Spectrum Disorder
The diagnostic manual used by clinicians in the US merged Asperger’s syndrome into autism spectrum disorder in 2013. What was once considered a distinct condition is now understood as part of a spectrum, with different levels of support needs. A person who would have received an Asperger’s diagnosis in the past would today receive an ASD diagnosis, often at Level 1 (requiring the least support). The evaluation criteria focus on two core areas: persistent difficulties with social communication and interaction, and restricted or repetitive patterns of behavior or interests.
Where to Start
Your first step depends on your age and situation. For children, a pediatrician typically conducts developmental screenings and can refer you to a specialist. For adults pursuing a diagnosis for the first time, a primary care doctor or therapist can provide a referral, though many specialty clinics also accept self-referrals.
The professionals qualified to formally diagnose autism include clinical psychologists, neuropsychologists, psychiatrists, and for children specifically, developmental-behavioral pediatricians and child neurologists. If you’re an adult, look for a psychologist or psychiatrist who specializes in adult autism evaluations. General practitioners can point you in the right direction, but they typically don’t conduct the full assessment themselves.
What the Evaluation Involves
A comprehensive autism assessment is not a single test. It’s a multi-part process that usually spans several appointments and may take anywhere from three to eight hours of total evaluation time, sometimes spread over multiple days.
The process generally includes:
- Clinical interview: A detailed conversation about your current social experiences, sensory sensitivities, daily routines, and any repetitive behaviors or intense interests. The clinician will ask about difficulties at work, in school, or in relationships.
- Developmental history: Information about your childhood, including when you hit milestones, how you played with peers, and whether you had difficulties that may not have been recognized at the time. For adults, clinicians often ask to speak with a parent or family member who knew you as a child, though this isn’t always required.
- Standardized observation: The gold-standard tool here is the Autism Diagnostic Observation Schedule (ADOS-2), a semi-structured assessment where a clinician observes how you respond to social prompts, conversations, and activities. The version used depends on your age and language level.
- Questionnaires and rating scales: You may be asked to fill out self-report measures. A brief screening tool called the AQ-10 is sometimes used early on; a score of 6 or above suggests a full evaluation is warranted.
- Ruling out other conditions: The clinician will consider whether your experiences are better explained by ADHD, social anxiety, depression, a language disorder, or another condition. Many of these can also co-occur with autism, and most people diagnosed with ASD have at least one additional condition, so the goal is to get the full picture rather than just checking one box.
At the end, you receive a written report with the diagnostic conclusion, an explanation of the findings, and recommendations for support.
How Adult Evaluations Differ From Children’s
Children are often identified through routine developmental screenings at pediatric checkups or through concerns raised by teachers. Schools can conduct their own evaluations for educational accommodations, though a school-based assessment is not the same as a clinical diagnosis.
Adults face a different challenge. Many people, particularly women and those who learned to mask social difficulties, reach adulthood without ever being evaluated. Adult assessments rely more heavily on self-reported experiences and less on direct observation of “obvious” traits, because adults have often developed coping strategies that obscure the underlying patterns. This is why a thorough developmental history is so important: the clinician needs to understand not just how you function now, but how you experienced childhood.
If your parents aren’t available to provide early history, clinicians can work with school records, report cards with teacher comments, or accounts from siblings or other people who knew you growing up.
How to Prepare
Preparation makes a real difference in the quality of your evaluation. Before your appointment, gather anything that documents your early development: school records, old report cards, baby books, or notes from previous psychological evaluations. If a parent or close family member can attend part of the assessment (even by phone), that’s valuable.
It also helps to write down specific examples of the difficulties you experience. Think about social situations that confuse or exhaust you, sensory experiences that feel overwhelming, routines you depend on, and interests you pursue with unusual depth. Concrete examples give the clinician much more to work with than general statements like “I’ve always felt different.”
Costs and Wait Times
This is where things get frustrating. A private adult autism evaluation in the US can cost $5,000 to $6,000, though some clinics charge less. Many providers do accept insurance, but coverage varies widely, and you may need prior authorization. Call your insurance company before booking to ask whether they cover autism or neuropsychological evaluations and whether the specific provider is in-network.
Wait times for specialists can range from a few weeks to over a year, depending on where you live. University-affiliated clinics and teaching hospitals sometimes offer evaluations at lower cost but tend to have longer waitlists. Some clinicians now offer telehealth-based assessments, which can shorten both the wait and the cost, though not all components of an in-person evaluation translate perfectly to a remote format.
What Happens After a Diagnosis
Getting the diagnosis is often emotionally complex. Many adults describe a mix of relief, grief, and a sense of finally understanding lifelong patterns. It’s common to feel overwhelmed by what the diagnosis means for your identity and your past experiences. Clinicians should offer a follow-up appointment to discuss the implications, ideally two to four months after the initial feedback session.
In practical terms, a formal diagnosis can open doors to workplace accommodations, educational support, therapy tailored to your specific needs, and access to community resources. Post-diagnostic support can include psychoeducation (learning about how autism affects your daily life), peer support groups, and help from occupational or speech therapists depending on your needs.
That said, many people report that the support offered after diagnosis is underwhelming, often limited to a handful of leaflets and a list of other services to contact. Research consistently shows that adults want more than signposting. They want individualized support plans, help processing the emotional weight of a late diagnosis, and flexible access to professionals who understand autism. Seeking out autistic-led peer communities, whether local or online, can fill some of these gaps while you navigate formal services.
If You’re Not Sure Whether to Pursue Testing
Many people hesitate because they worry they’re “not autistic enough” or that their difficulties aren’t severe enough to warrant evaluation. The current diagnostic framework uses a spectrum specifically because autism presents in a wide range of ways. If you consistently struggle with social communication, feel drained by social interaction in ways others don’t seem to, have intense or narrow interests, experience sensory sensitivities, or rely heavily on routines, those are all worth exploring with a qualified professional. The evaluation itself is designed to clarify whether autism is the best explanation for your experiences, and there’s no penalty for pursuing one even if the outcome isn’t a diagnosis.