It would be pretty hard to measure doses of 10mg or less with a 3 ml syringe. A insulin syringe makes it much easier. If the tren ace is 100mg/ml each marks on a u100 slin pin will equal 1mg. Try measuring that small of dose with the usual 3ml syringes. I have a hard enough time measuring .25 ml on a standard 3ml syringe for trt, I couldn't imagine trying to measure 5mg of tren a with one.