Oops ( finger slipped) I would be concerned about potency, if you've been injecting it for 8 weeks and you're seeing results that's a good sign, red blood mass builds up the longer you do hgh, as you increase your dosages, a build up of red blood mass will cause high blood pressure, you know like pumping mud instead of water, cycle off if your bp gets to high ( tes can do this also, so if youre doing both), man you should have have a bp monitor at home, I check mine 5 or 8 times s day when blasting! Not keeping it cold will weaken med, ask your ol boy if he gets it cold, keeps it cold, any of that. When you say you've seen results, what's it done you can notice, my first 8 weeks on hgh I had fantastic results, less body fat, renewed energy and an over all good feeling of health! Research your brand, see what the storage instructions are. Mine is tev tropin (somatropin). Also when you mix it what's it look like, clear or cloudy?