Online CAST autism screening
The Childhood Autism Spectrum Test is a screening questionnaire used to identify possible autism-related traits in children between 4 and 11 years old. It was created by the Autism Research Centre and is filled out by parents or caregivers based on their child’s daily behavior. The test includes questions about social skills, communication, and behavior. While it does not provide a diagnosis, it helps indicate whether a child should be assessed further by a professional.
How the CAST works
Who can complete the CAST?
The Childhood Autism Spectrum Test is usually filled out by a parent, caregiver, or teacher who knows the child well and understands their everyday behavior.
How much time does it take?
It generally takes about 5 to 10 minutes to finish all the questions.
What areas does the CAST cover?
The test looks at:
- How the child interacts and plays with others
- Communication (both verbal and nonverbal)
- Imagination during play
- Repetitive actions or strong, focused interests
CAST scoring
The Childhood Autism Spectrum Test includes 37 yes-or-no questions that look at behaviors and communication patterns related to Autism Spectrum Disorder. After completing the questionnaire, the answers are reviewed to see if the child shows signs that may need further assessment.
How M-CHAT Scoring Works
Each answer is scored as 0 or 1 based on whether it suggests a possible sign of autism. The total score ranges from 0 to 31. Only 31 questions are counted in the final score, while 6 are used as control questions.
Score range
Meaning
What to Do
0-14
Low chance of Autism Spectrum Disorder traits
No action needed unless you have other concerns
15-30
Some signs of autism may be present
Consult a professional for further evaluation
+31
High chance of autism traits
Seek a clinical assessment as soon as possible
It’s important to remember that the Childhood Autism Spectrum Test is only a screening tool, not a diagnosis. A higher score does not mean a child has Autism Spectrum Disorder. It simply suggests that further evaluation may be helpful.
Detailed assessments like the Autism Diagnostic Observation Schedule Second Edition are used by professionals to better understand a child’s development and decide if a diagnosis is needed.
What to expect after the CAST
After completing the Childhood Autism Spectrum Test, the team at L.E.M.Y.S will support and guide you through each next step with clarity and care.
1. Reviewing your child’s CAST results
Within one business day, a Clinic Admissions Associate (CAA) will reach out to review your child’s screening results and address any questions or concerns you may have.
2. Comprehensive evaluation
If your child’s CAST results indicate traits commonly associated with autism, a comprehensive follow-up evaluation may be recommended. A widely used diagnostic tool is the Autism Diagnostic Observation Schedule, Second Edition (ADOS-2), a structured, in-person assessment conducted by trained clinicians.
Once the evaluation is completed, the findings are reviewed and shared with your child’s healthcare provider. The provider will consider these results alongside clinical observations and developmental history to determine whether a diagnosis is appropriate and to recommend next steps.
3. Personalized autism care plan
If a diagnosis of autism spectrum disorder is made, L.E.M.Y.S works closely with families to outline clear and supportive next steps. Our team will guide you through the early stages of care, which may include:
- Reviewing your insurance coverage and confirming available benefits
- Scheduling a consultation with a Board Certified Behavior Analyst® (BCBA®) to discuss your child’s strengths, needs, and developmental priorities
- Creating individualized ABA therapy goals aligned with your child’s progress and your family’s goals
L.E.M.Y.S ABA programs are designed to foster development in communication, daily living, and social interaction. Therapy is provided in a structured and supportive environment that prioritizes collaboration, consistency, and measurable progress.
CAST Autism Screening Questionnaire
Please respond to the following questions based on your child’s usual behavior. The CAST should be completed by a parent, guardian, or caregiver who has observed the child in multiple environments, including home, school, and social settings.
If a behavior has been observed only rarely and does not reflect your child’s typical actions, please select No. It is important to answer Yes or No for every question to ensure the L.E.M.Y.S clinical team can review the results accurately.
Frequently asked questions about the CAST
Why early autism identification matters
Recognizing signs of autism spectrum disorder at an early stage allows children to access supportive services during critical periods of development. Early intervention may include evidence-based approaches such as Applied Behavior Analysis (ABA) therapy, which focuses on strengthening communication, learning readiness, and daily living skills through structured and positive strategies.
Parents and caregivers are often the first to notice developmental differences. Screening tools such as the CAST can help determine whether a child may benefit from a more comprehensive evaluation. Early awareness and timely intervention can have a meaningful impact on long-term development and overall well-being.