Bro,
Anything you get in a 10ml multishot vial is normally fake unless its a vet product.
Also there are good fakes and bad fakes out there bro.
Take for example goldline they went bust about 4 to 6 years ago but you can get a goldline 10ml multishot vial (cyp 200mg per ml) it is exacly like a yellow cap vial but 10ml with a blue cap.
I had this tested but a friend who works in a lab as i wanted to know what was really in it
180mg per ml of cyp not bad for a fake this is what i would call a good fake. My friend used it with good results.
Then there is the steris 10ml vial of deca with bits floating in it crap packaging crap label and i did not bother to get it tested..! and fuck knows whats in that.
just be carefull bro you dont wanna inject crap or stuff that is not sterile..!