I don't know about pediatric and maternity--there might be special rules about that.
When I was a candystriper--and mind you, this was maybe 26-27 years ago--our duties varied greatly depending on what area of the hospital we were helping at the time. For a while, I worked in surgery. Yes, surgery! I had to wear a white lab coat whenever I left the surgery area, and this made me feel like a doctor (a big thrill as a kid). But my joy pretty much ended there. I soon learned that I didn't have the stomach to go in and out of the OR during surgery to fetch samples of whatever-it-was and take them to the lab and then bring back the results, etc. It was just too . . . icky, sorry.
Also, I soon realized I was basically doing all the orderlies' work while they just stood there and chatted.
I eventually asked to be reassigned to a regular wing of the hospital, where my duties involved bringing patients their mail or flower deliveries, fresh water pitchers/cups and sometimes answering patient call buttons and such. Much more boring, though I enjoyed meeting people and being useful. Many people were obviously not at their best, though, and it took more patience and politeness that I normally had--therefore, it could be draining.
I also ran samples from the wing of the hospital I was in down to the lab and came back with results, etc. So there was still a "body fluid" element to it, and there were . . . accidents (one truly embarrassing one was nearly totally my fault, too).
I believe I also went and fetched clean linens and towels and such. I don't think I handled any dirty laundry but there was certainly plenty of it present in large bins when I went to fetch the clean stuff.
All in all, the experience taught me that I wasn't cut out to work in medicine. I had been pretty ambitious before that, but afterward I knew that it wasn't my thing.