I say no as well but i have. They are quite cheap.... i would say preload an extra syringe for your next injection if you trying to use a needle to withdraw, more than once.
Sage
ok wait, think I misread. If you're talking about using it twice, use one day, then use another day, then no, not a good idea. If you mean use twice on 2 different vials back to back on the same day then yes.
I think it is fine especially if you are drawing from a stopper then from and amp, the amp cannot be contaminated because u are drawing the gear and tossing it away.
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