Rob, I dont really think its fake or not that you need to worry about. Just under/over dosing. Obviously avoid anything in a sachet. Thats just geigh and unsanitary.
As previously stated .... back before internet or before real internet growth (late 90's) you could absolutely find fakes of alot of the major pharm companies. But now I dont really think there is a point. If some guy is doing it in the small time by faking vials and filling them with just CSO and selling them, sooner or later this guy is going to get his skull broken.
I have done the clinic route before like you. Even in that case its not like your getting big name brand test or nandrolone that we all know right? It should just be coming out of a compounding pharmacy right? Honestly....nowadays...and with the recent disease outbreak from that compounding pharmacy(i forget the details) I would rather have a real good reputable UG. But know what your getting. Most people wouldnt mind over dosed gear.
One of the real good quality UG test I have is dosed high. This is not good when your trying to cruise and keep your test around 1000 ng/dl for a few months and let your RBC, Hemocrit, liver, LDL ect....normalize. Then get bloods done and find out your total T is over 2400 ng/dl. SO everything has been elevated for way too long, blood is thick...takes longer time to normalize now, fucks up your blast plans...ect.
So like I said....know what your getting. Next time I go to use this stuff at 375mg wk I'm only going to use 250mg wk.