It's all just tests or therapies
If you can develop a test that sells you make a fortune as you get to run training and licences
Every professional is trained in at least two, and these vary- so here you get either ADI-R or DISCO, and then something like ADOS on top
The first two are interviews to be ahd with parents- autism diagnoistic interview- revised. The second is diagnostic interview for social communication disorders.
Then you get CARS (childhood autism rating scale), CHAT ((checklist for autism in toddlers...) it's been a few months since I did the module so there'll be a few others by now LOL
Then the therapies and techniques. DIR- usually known as floortime- (Developmental, individual, relationship-based)... ABA (applied behavioural analysis) FBA (functional behavioural analysis)...... Son-Rise (no acronym but funny name), GF-CF (gluten free casein free), salycylates (certain foods such as apples, citrus, tomatoes... it's not all E numbers sadly).....
And you know what? I ahd to google loads of those for exact names despite being able to rattle it all off LOL.