I do when I have a "reconstitution/ pharmacy day". As in I sterilize my environment and reconstitute and pull up 20+ syringes (single dose, insulin syringe). Its a a trade off but for the convenience of having them ready to go when needed and also when I'm in the sterile zone in my head I am very meticulous with the process. I've been doing that for 2yrs+. With that said, out of all the batches I did, one syringe wouldn't depress. The plunger wouldn't move. I don't know what happened with that. I just tossed it. No other issues. L*lly has been hit with "aseptic technique" multiple times so I trust myself more than them.