The following signs can help you identify whether your child might have autism.

  • Six months: No social smiles directed at people and limited or no eye contact

  • Nine months: No sharing of smiles, vocal sounds or nonverbal communication

  • 12 months: No babbling, response to name or use of gestures to communicate

  • 16 months: No words

  • 24 months: No meaningful, two-word phrases

  • Any age: Loss of any previously acquired babbling, social skills or speech

  • Any age: Avoids eye contact and prefers time alone

  • Any age: Struggles to understand the feelings of others

  • Any age: Nonverbal or delayed language development

  • Any age: Becomes upset by changes in routine

  • Any age: Has restricted interests

  • Any age: Performs repetitive behaviors

  • Any age: Unusually strong reactions to sensory input


If you are concerned or if your child’s pediatrician has indicated that your child is at risk of a diagnosis of autism,  we can help!

A diagnostic assessment provides information related to your child’s diagnosis and is completed by a licensed physician or psychologist. AB Spectrum has a licensed physician with experience diagnosing Autism Spectrum Disorder (ASD) as part of our team of providers. 

Our first step will be for you to complete an M-CHAT (Modified Checklist for Autism in Toddlers). We have this assessment available for you to complete below.

If the M-CHAT screening indicates a risk of ASD, we will invite you to our office for a more formal diagnostic assessment called ADOS-2 (Autism Diagnostic Observation Schedule, 2nd edition).  This is the primary test that is used to make a formal diagnosis of ASD, and we can administer this test. We’ll also request records from your child’s pediatrician or other healthcare providers.  Then, our physician will review the records and make a formal diagnosis.

A formal diagnosis is required by an insurance company before they will pre-authorize any ABA therapy benefits relating to Autism Spectrum Disorder.  Our goal at AB Spectrum is to simplify the access to care for our clients – that’s why we offer assessments, diagnosis, as well as help communicating with the insurance company on your behalf.

Building Respect, Responsibility, & Community for a Brighter Future.

14733 Clayton Rd Chesterfield, MO​ 63011

Phone: 314 339 7732

Fax: 636 220 8338

Hours of Operation: 7:00am -6:00pm

Administration Hours: 7:00am-4:00pm

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