yesitcan parent
The real question should be how many false positives does ADOS-2 produce? (The gold standard of autism diagnosis)
How do you measure a true positive? Afaik, we don't have an objective, repeatable method of diagnosis.
If you can't measure a true positive, you can't determine the false positive rate.
I've read that fMRI may be used as an objective diagnostic tool for autism. This was a few years back and I'm not sure how further research panned out.
You've probably read about some differences that show up on a population level (just like there are with ADHD) but it's not a diagnostic tool.