Hey everyone, Love the site and the help here... I have heard many good things about Quickfix 4.0. I decided I wanted to go with the substitute method. I recently went to my local headshop and bought Dr. Greens Agent X Premixed Unisex Synthetic Urine. I basically need to know if anyone has used this product with success. I've searched these forums and I found a total of 3 posts that even mention it worked with flying colors. After google searching I found this link: Dr Greens sucks and so do all synthetics - YaHooka Forums The person states that it did not work, here is is reason why: "Needless to say about a week later I got a call from the lab/Quest diagnostics the Dr said my sample was lacking the proper level of creatine 2 mg is normal my sample had.5 mg!I did not know what to say he asked if I took prsciption drugs I lied and said yes he said this could have caused it!So the next day I called DrGreens (858)454-7826 to tell them what happened!The jerk who ansewered the phone told me this has never happened,otherwise he wouldent be able to talk to me cause the phone would be ringing off the hook!He told me to get the results or there is no refund" So I have 3-4 posts that are positive and then this one negative post. Basically if you have used this product or know anyone who has, can you please respond to this thread. I appreciate the help and really could use it!