The Autism Diagnosis Process: What to Expect

Are you worried that your child may have autism, but you’re not sure how the autism diagnosis process actually works?

You’re not alone.

Most parents I speak with feel stuck in that in-between space. You notice certain behaviors. You bring them up at a check-up. You fill out a form. And then you’re left wondering…

Is that enough?
How do I know my child is getting all the necessary tests?
What if something is being missed?

In the video below, I walk you through the typical autism diagnosis process, what most pediatricians screen for, and what often gets overlooked.

How the Autism Diagnosis Process Usually Starts

Most pediatricians are trained to screen for autism between 18 and 36 months of age.

In most clinics, this is done using screening surveys. Parents complete questionnaires about their child’s behavior at home. These tools are helpful, but they are not diagnostic tests.

Screening tools are designed to identify children who may be at risk. They are not meant to confirm a diagnosis.

If a screening raises concern, families are usually referred out for further evaluation.

In addition to surveys, pediatricians may observe a child in the clinic and note behaviors that could suggest autism or another neurodevelopmental condition.

But here’s the key thing many parents don’t realize:

The standard autism diagnosis process often stops at screening and referral and can miss other issues that can mimic autism symptoms.

Common Signs of Autism Spectrum Disorder (ASD)

Children with autism spectrum disorder show differences in two main areas.

1. Social Communication and Interaction

This may include:

• Delayed speech
• Limited use of gestures
• Unusual sounds or tone of voice
• Limited eye contact
• Difficulty with back-and-forth conversation
• Little or no pretend play
• Limited imitation of others
• Limited sharing of enjoyment with others

2. Restricted and Repetitive Behaviors

This may include:

• Unusual hand, finger, or body movements
• Fixation on specific objects or topics
• Lining up objects or repeating phrases
• Difficulty with changes in routine
• Unusual sensory interests

It’s important to say this clearly: A child can show some of these behaviors and not have autism. That’s where a deeper evaluation matters.

Conditions That Can Mimic Autism

Here’s where the autism diagnosis process often needs to go further. Several conditions can look like autism but are not autism.

These include:

• Hearing impairments
• Vision impairments
• Intellectual delays
• Anxiety
• ADHD
• Food intolerances or nutritional imbalances
• Gut dysbiosis

A child with hearing loss may have limited speech.
A child with anxiety may avoid eye contact.
A child with chronic constipation or gut imbalance may show behavioral changes, sleep issues, and food restriction.

Without ruling these out, it is very hard to make a clear and accurate diagnosis. This is often the missing piece.

Why Most Pediatric Clinics Don’t Do More Testing when Screening for an Autism Diagnosis

It usually comes down to time and resources. Comprehensive testing takes hours. It requires collecting detailed history, reviewing nutrition, performing physical exams, interpreting data, and creating a personalized plan.

Many pediatric clinics are focused on primary care needs like infections, vaccines, and acute illness. They simply don’t have the structure to provide in-depth neurodevelopmental evaluations.

But if we truly want clarity in the autism diagnosis process, we have to go deeper.

A More Comprehensive Autism Diagnosis Process

Here in our Las Vegas-based pediatric clinic, we take a holistic, individualized approach to Autism diagnosis.

When families come to us with concerns about autism for their child, we start with a detailed medical and social history, from birth to present. We look at early illnesses, stressors, diet, sleep, and development.

Then we evaluate the child’s overall health. Depending on the child’s needs, this may include:

• Hearing and vision testing
• Blood work
• Gut health testing
• Cognitive and adaptive skills testing
• Intelligence testing
• ADHD evaluation
• Autism-specific testing, such as ADOS

We perform most neurodevelopmental testing in person, using standardized tools that help rule out competing diagnoses.

The goal is clarity. Not guessing. Not labeling too quickly.

What Happens After Autism Testing?

After the full evaluation, families receive a personalized treatment plan.

This may include:

• Targeted dietary recommendations
• Lifestyle modifications
• Gut microbiome support
• Referrals for appropriate therapies
• Behavioral and developmental support

Our goal is the same as yours. We want to understand the root cause of your child’s symptoms and provide comprehensive, compassionate care.

We also believe in minimizing wait times. Most families review their results with us within three weeks of completing their evaluation.

If You’re Concerned About Your Child

If you’re questioning the autism diagnosis process for your child, trust that instinct. Asking deeper questions is not overreacting. It’s advocating.

If you’d like to learn more about working with us, click “Become a Member” above to schedule a time to chat.

You deserve answers. And your child deserves a thorough, thoughtful evaluation.

Thank you for being here. I’ll see you in the next video as we continue navigating the world of holistic pediatric medicine.

FAQ about Autism Diagnosis