What is the shelf life of an open bottle of test cypionate

I look n look no one got a straight answer.

What exactly do you mean by "open?"

If you mean punctured at least once as opposed to not used at all, it should be good until its expiration date IMO. That's also what the doc tells me for the human grade test cyp that I get for HRT.

10 minutes

6 Months after it has excess air in the bottle..No Im just kidding..I don't know never left an unused bottle laying around.

So uptight...OK heres your answer. Its usually good until the oil starts to breakdown. Its a food substance and does have a shelf life usually 6months to a year once it has been exposed to foreign material, sunlight, heat, etc etc. believe it or not oil can spoil.lol
I know it has BA and all that but then your compound starts to break down too.. Like they said most have an expiration date. My last bottle has a 2 year window stamped on it. So try to plan where you have little to no leftovers laying around for anyone to find, ask questions or go to waste.
I will post the link if I can copy it, where I referenced this from. Its copy protected so I may just do a Screen shot.