I get ALL of my gear tested. It is the only way to know if it is real. Hell, some of the human grade that everyone praises is fake. Unless you are buying OTC from a pharmacy you will never know 100% if it is legit - unless you get it tested.
If your gut says fake, you should listen to it. I mean it sucks to lose 50-80 bucks that's for sure nothing to sneeze at...but your health is priceless. Not to mention all the medical bills/missed days from work/etc. you might incur from poisoning yourself w/ bunk gear...plus illness almost always will set you back in your training...Just some food for thought borly. I know I'd have a really hard time not trying something I invested my time & $ in; be strong robly.