One sure fire way I know to beat any test would be to insert a catheder into your urethra and inject someone else's urine into your empty bladder. You would urinate and empty your own bladder and then put someone elses urine in your bladder. Read about this and it makes perfect sense. I think it would be a bit painful, but if you use some KY on the tubing it should go in just fine. Ive seen it done when my wife gave birth, sucker goes right in. You would have to know when the test is being given and do this shortly before you go for the test. The urine would adjust to your body temperature and be good to go. I did read how someone flunked the test because they used their girlfriend's urine and it tested positive for HCG!! This is how they found out that she was pregnant, what a surprise.