For a basic cycle of test cyp, 2 vials will get you through, injecting 250mg 2x wk. Remember that there is dead space in the syringe so you want to actually draw up what looks like .9ml each time. Otherwise due to the dead space you’ll actually be drawing more like 1.1 to 1.2cc each time. That adds up and you will run out at week 8. So draw just under the 1 mark and you’ll be good. If you want to be safe, get a 3rd vail. Along with this, you want to use an AI. Adex is my AI of choice. .5 to 1mg EOD through the cycle and in the weeks leading to PCT. Go get it brother !