Every parent notices things at their own pace. Maybe your child isn’t speaking as much as others their age, avoids eye contact, or becomes upset with certain sounds or changes in routine. These small moments can lead any parent to wonder if their child is on the autism spectrum.
Understanding how autism is diagnosed can help parents and caregivers recognize early signs and seek the right support sooner. At On Target ABA, we walk families through every step, from screening and testing to beginning therapy once their child’s diagnosis is confirmed.
Key Takeaways: Preparing for an Autism Assessment
- Learning how to get assessed for autism and how to prepare for the evaluation can help relieve stress and make the process feel more manageable for families.
- A full autism evaluation includes behavioral observations, parent interviews, communication testing, and standardized assessment tools like ADOS-2.
- Preparing notes, records, and questions ahead of the evaluation can help make the process smoother for both parents and children.
- It’s normal for parents to feel overwhelmed, relieved, or uncertain after a diagnosis, but early support can make a meaningful difference in a child’s development.
- Early intervention and personalized therapy plans can help children build communication, social, learning, and daily living skills.
The Autism Evaluation Process
Read on to learn more about the different stages of an autism diagnosis.
Step 1: Early Developmental Screening
Your journey usually begins with a simple developmental screening during a well-child visit. Most pediatricians use screening tools at 18 and 24 months, but you can request one at any time if you have concerns.
A screening might include:
- A short questionnaire about your child’s communication and social behaviors
- Observation by your pediatrician
- Questions about milestones like speech, play, and movement
This is not a diagnosis, it’s simply a way to see if your child might benefit from further evaluation.
If results suggest developmental differences, your pediatrician will refer you for a comprehensive autism evaluation.
Step 2: Autism Testing and Developmental Assessment
A full autism diagnostic assessment goes beyond observation. It includes structured evaluations, developmental history, communication testing, and behavioral assessments that help professionals identify autism-related traits while understanding your child’s specific strengths and challenges.
During an autism diagnosis visit, this is what to expect:
- Standardized testing tools (like the ADOS-2 or CARS)
- Parent interviews about developmental history
- Direct observation of play, social interaction, and communication
- Cognitive and language testing
The goal is to identify not just whether your child meets criteria for autism, but how to best support their learning and daily living skills.
Step 3: Receiving the Diagnosis
After the assessment, you’ll receive a written report. This report may include:
- The diagnosis (if criteria are met)
- Summary of testing results
- Recommendations for therapies and next steps
It’s completely normal to have mixed emotions at this stage — relief, worry, or even confusion. Just remember, a diagnosis doesn’t define your child. It’s one part of understanding who they are as an individual.
At On Target ABA, we see that when parents receive clarity, they finally feel hopeful. With a clear diagnosis, you can begin accessing the help your child may need, such as ABA therapy, speech therapy, or occupational therapy.
Step 4: Starting the ABA Evaluation
Once you have your diagnosis report, the next step is scheduling an ABA assessment with a Board Certified Behavior Analyst (BCBA).
At On Target ABA, this includes:
1️⃣ Reviewing your child’s diagnostic report
2️⃣ Observing play and communication
3️⃣ Identifying skill gaps and behavioral strengths
4️⃣ Building a personalized treatment plan
This process also serves as your insurance pre-authorization step. Most providers, including Medicaid, require this assessment before approving services.
How to Prepare for Your Child’s Autism Evaluation
The autism diagnosis process for toddlers and kids can be stressful for them and for their parents. Here are a few ways to make the process smoother:
✅ Write down your concerns. Bring notes about what you’ve observed at home or in daycare.
✅ Gather documentation. This may include past assessments, medical records, or preschool progress notes.
✅ Ask questions. You have every right to understand what each part of the evaluation means.
✅ Bring comfort items. A favorite toy or snack can help your child feel at ease.
Remember, clinicians are there to help, not judge, so it’s important to be honest and upfront. . They want to understand your child’s unique profile so they can make the best recommendations possible.
What Comes After the Autism Diagnosis?
The first step after receiving a diagnosis is acknowledging and accepting the emotions that may accompany it. Feelings like sadness, relief, or uncertainty are completely normal. From there, what matters most is turning to action.
Once your child is officially diagnosed, you’ll have several options for support. The most common next steps include:
- ABA Therapy: Focuses on building communication, learning, and daily living skills through positive reinforcement.
- Speech Therapy: Improves language, articulation, and comprehension.
- Occupational Therapy: Supports sensory needs, motor skills, and independence.
- Parent Coaching: Helps families reinforce progress at home.
Once you receive an official autism diagnosis, many, if not all, of these therapies may be covered by your insurance.
You don’t need to start everything at once; your BCBA or developmental specialist can help prioritize which services to begin first.
From Diagnosis to Support: Moving Forward with Confidence
When your child is newly diagnosed, you shouldn’t have to navigate everything alone. That’s why we’re here. We provide guidance throughout the evaluation process, free insurance verification, comprehensive ABA assessments, parent training to reinforce learning at home, and therapy environments designed for comfort and engagement. Taking the first step toward evaluation is one of the most powerful choices you can make for your child.
No matter where you are in your journey, On Target ABA is here to help you move forward. Reach out today to hear how we can help you and your child.
FAQs on the Autism Evaluation Process
How early can you test for autism?
You can test for autism as early as 18–24 months using standardized screening tools like the M-CHAT-R. Clinicians can reliably diagnose by age 2 based on behavior, communication, and social interaction patterns. Early screening improves outcomes by enabling intervention during critical brain development stages.
Who diagnosis autism?
Licensed professionals such as psychologists, psychiatrists, developmental pediatricians, or neurologists can diagnose autism. These specialists use DSM-5 criteria, behavioral assessments, and tools like ADOS-2. Multidisciplinary teams often complete evaluations within 1–3 sessions to ensure accurate diagnosis across developmental, cognitive, and social domains.
How can I prepare for an autism assessment?
You can prepare for an autism assessment by gathering developmental history, medical records, and behavior notes. Track communication, social interaction, and repetitive behaviors over 2–4 weeks. Complete screening forms before the visit and bring school reports if available. Preparation improves diagnostic accuracy and shortens evaluation time.
How long does it take to diagnose autism?
Autism can be diagnosed within 1-2 hours of a direct assessment. Clinicians conduct interviews, observations, and standardized tests, such as the ADOS-2. On Target assessments are completed in one day with a report delivered to parents within 48 hours.