ADOS (Second Edition, Module 4) evaluates 20 items in five domains. 11 of those items (in two domains) are part of the diagnostic algorythm:
Communication domain: Stereotyped/Idiosyncratic Use of Words or Phrases, Conversation, Descriptive, Conventional, Instrumental, or Informational Gestures, and Emphatic or Emotional Gestures
Social Interaction Domain: Unusual Eye Contact, Facial Expressions Directed to Examiner, Comments on Others' Emotions/Empathy, Responsibility, Quality of Social Overtures, Quality of Social Response, and Amount of Reciprocal Social Communication
Each item is scored 0, 1, 2, or 3.
There are three diagnostic categories: Autism, Autism Spectrum, and Non-Spectrum.
You are considered not in the spectrum if: Communication total ≤1, Social interaction total ≤ 3, or Communication + Social interaction ≤ 6