I wonder if the shelf life is much shorter than if it were in a ampule or vial. I left some gear in a syringe a couple days and the rubber plunger had started to deteriorate leaving "floaties" in the syringe..
bro not a chance the shelf life is effected the redijects come in glass syringe and stated above they are some of the best Sustanon (sust) you can buy... and even if it was bad would not give you "sust flu"