I hear ya. I'm 2 months in my clozapine blood work adventures and I'm getting to know the phlebotomists at the hospital all too well. For some reason they have a lot better luck getting blood from my left arm than my right so I've got tons of scar tissue there.
When I was in inpatient I had no problem with them getting blood out of my right arm while I'm still half asleep in bed. It's a wonder why they can't get it when I go to the lab to get it done.