Actually you are better off using someone else's urine, as it is real and therefore cannot be detected.

Unexpired synthetic batches (Quick Fix, Magnum, etc) that have been stored properly (ie no exposure to direct sunlight) are undetectable for drug testing.
Burnt Toast Reviewed by Burnt Toast on . aged urine substitution Hello all, im new to this site this morning as well. My question is this... I have a drug test later today that i plan to pass using my friends clean urine. the sample it self however, is 6 days old. As soon as he went in the bottle for me, i put it in the fridge and just removed it this morning to prepare for the warming process so to speak. Is this legitimate or do i need more recent urine?? the color it self looks normal, no abnormally rank smell, and the only signs of bacteria are small Rating: 5