Researchers at Clarkson University and the State University of New York at Plattsburgh have published the first study showing that children with autism spectrum disorder have differences in protein levels in their saliva when compared to typically developing children. The study appeared in the journal Autism Research.

Autism spectrum disorder currently affects one in 68 US children, and the number of people diagnosed with autism continues to rise. Diagnosis is currently made based on behavioral observations, but no biological test for autism exists. A biological test could aid in earlier diagnosis, helping to direct people with autism to interventions.

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