I've heard from a few places (including one of my friends college professors :thumbsup that as long as it's stored in an airtight container in the freezer, it's good for up to a year.

In anticipation of finding a job after college I stopped on May 1st and was clean for 63 days before I broke over the July 4th extended weekend. I tested clean the day I broke so I vacuumed sealed a clean sample incase it was needed. I havent smoked now in 10 days and will probably get tested next week if a job prospect works out. I'm nervous but I think aslong as I follow the guidelines for flushing I found on here I should be cool.
MalLoaves Reviewed by MalLoaves on . Question About Storing Clean Urine for Upcoming Drug Test Hi everyone, I'd like to know how long can clean urine be stored for it to be valid to sub for a pee test? And what would be the best method, freezing? refrigeration? And if I use a plastic bottle with a temperature strip, and heat the urine to acceptable test temperature, will that cause a test failure? Any ideas would be appreciated. Thanks! Rating: 5