expired gear?

Whats up everyone? just have a question. I've been reading and searching the forum for any info on expired gear. I found some info, but from old threads. Looking to see if anyone has updated info. I have some testoviron depot, deca, and primo depot all vials that expired about 2 yrs ago. Long story short, I bought it while in college had a bad motorcycle wreck and never got a chance to use it. Its been kept in a cool dark place since i got it. anyone know if this stuff is still safe to use?

it's still good. it'll be good for a while, just the potency will decrease, but at this point it's good to go.

thanks for replying.....Thats exactly what i read in some of the older threads, but I wonder how if its in a glass vial? Nothing gets in and nothing gets out how is the potency then affected?

cause everything has a half-life. the chemical breaks down and eventually becomes no more.