Everything goes through my 25g. That's my size right there.... Anyways, I would stay away from these guys. They sell fake GH and are known to be hit or miss. I don't know why they would put Cambridge Ma on the bottles. They probably think they're being slick and really shipping from CA or somewhere else far from MA it's fucking stupid either way.
You have the stuff so get a labMax test and if it passes, try it. Get bloods done and you'll know whether to continue or not. I would run it through a filter too if you can. I haven't heard anything about if this lab is sterile or not but it's up to you. That's my advice.
I know john meadows likes them and countless national level competitors use them. Where are you getting this information at? Sterile lol? My bloods were 1421 on 150 mgs a week. I have never seen anything negative about them. Again where is this info? I have never seem Cambridge mass on a single bottle of theirs lol.