i would be upset if I got those little vials. right now I use the 5mL vial and there is "waste" at the end that I cant suck up. I imagine if you did that every time with a 1mL that you would be getting a lot more waste, thus slightly less dosage. It doesnt seem like the vials account for the waste from the end of the vial plus the waste that is left in the tip of the syringe!