ASD seems to be a "vibe" thing with psychologists.

The last time I sent a guy with ASD over to the local psychologist I use for a basic psych eval, I got back a "dude - this guy has Aspergers!" handwritten note.

Unfortunately, he didn't do that testing, but I eventually got it confirmed by a local university.

I don't know what kind of vibe there is, but it seems to be a "know it when you see it" more than a formal test.