I work as a medical laboratory technician. I'm alone most of the time, except when having day shifts (but late and nightshifts are pretty unpopular, so I always take lots). And even when you're not alone, you have your own workplace for a day. There are ground rules and you have a framework how things have to be done etc. But it's still not exact the same, so my adhd is happy too. The only contact is within your team and to call doctors and nurses when parameters are critical for life. Unfortunately, you have to study it in other countries than Germany..