vial amount

So my question is if there is 200mg of test cyp in one mini vial what’s to stop someone from using all that 200mg before throwing it out and saving a boatload of money instead of injecting once and throwing it away … does it go bad ? Does it decompose the more you use it ?

Hello All, I am currently injecting .5cc weekly. I use easy touch 27g 1cc 1/2” syringes. I get a 10ml vial Perrigo brand. This vial should 6 months? Correct? I have maybe 1 dose left with 3 needed til next appt. I ran into this with my last vial so for my current one I kept my dose at .4-.45...

I used a 1 ml BD Syringe to inject .5 ml of T cypionate, on two occasions. It was a new 1 ml vial but on the 2nd injection I noticed about .2 ml of liquid left in the vial. Is this normal? The second injection stung afterwards for quite a while, I was thinking that it may have been the benzo...