Current methods to diagnose autism spectrum disorder rely on observing the behavior of the patient. Now, researchers are investigating metabolic pathways that may hold the clues to more definitive diagnosis.
Reference
T. Vargason, D.P. Howsmon, and J. Hahn. "From Data to Diagnosis: The Search for Biochemical Markers of Autism Spectrum Disorder"
Chemical Engineering Progress 114, No. 5, pp. 40-45 (2018)