I have a “suspected diagnosis” (German: Verdachtsdiagnose) of ASD by a psychiatrist, and they forwarded me to a clinic that can perform the full diagnosis. I’ve filled out a form and been put on the waitlist, but they couldn’t give an estimate. Another clinic in my region also does autism diagnoses for adults, but their website says they have waiting times of 2–3 years 😵💫
So I was diagnosed roughly 10 years ago as an adult. I was on 2 waiting lists of two different clinics. Queue times used to be between a year and 18 months at the time. I also told them I can take any appointment that may open up spontaneously. They just have to give me a call and I‘m there.
Luckily a spot did open up so I only waited for around 6 months overall. I got lucky. Nowadays a lot of people want to get tested and everything is clogged up.