i think i throw the box away when i went to use it for school but i had some pee for me that time, i bought it in june of 07 but im going to just buy a new one i think. but i have a friend that looks just like me and pissed for me last time when i toke a drug test for school he went to quest laps with my id and it worked just fine. i now the kid does not smoke or do any drugs becasue his mom works for DEA.