Hey guys I decided to use the substitution method on Friday to attempt to pass my drug test. I had the quickfix bottle but instead used my friends clean urine instead of the synthetic stuff. I put the bottle with the clean urine in the microwave for about 8 seconds, closed it up, attached the handwarmer, and then went to the facility. Its only been a couple days but I was worry free because the substition went fine, with the temperature reading between 90-100 and the person sending it off to the lab. Only when browsing the internet later did I realize that people online advise not microwaving clean urine because it somehow can alter the chemicals and cause you to fail the drug test. I am now stressing out like crazy and need to know if this is just what people "think" or is their actual evidence to back it up. It was only in their for like 8 seconds but people say that the radiation messes with it and the labs can tell. Can somebody please give me some information on the matter. Thanks!