The Modified Checklist for Autism in Toddlers (M-CHAT) is a validated developmental screening tool for toddlers between 16 and 30 months of age. It is designed to identify children who may benefit from a more thorough developmental and autism evaluation.

Once an autism diagnosis is reached, medical guidelines including the American Academy of Pediatrics recommend genetic testing for the child to identify DNA changes that inform cause and critical medical management changes.

Is there a genetic test for autism?

"The M-CHAT is designed to be administered to parents/guardians and interpreted by pediatric providers in the context of developmental surveillance. The online version at M-CHAT.org is approved by the M-CHAT authors."

- Diana Robins, Deborah Fein, Marianne Barton
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