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can you use old urine for drug tests?

  • by prettydarndope
  • Jan 08 2008 08:52 PM
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Posted 08 January 2008 - 08:52 PM

i have a drug test coming up and i saved a bottle of my pee from about a week and half ago when i was clean. It has not been refrigderated or anytyhing, left at room temperature. Can they tell that he urine is old?
Replies (11)

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  • crackrocksteady
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Posted 08 January 2008 - 09:00 PM

Yes, urine grows bacteria after a few hours, so you'll need a different sample to use.

Also, that's definitely not sanitary in any way. Throw it out as soon as you can, dude.

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  • LurkerModel5
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Posted 08 January 2008 - 10:22 PM

Home test: yes. They can tell in a lab test if its more than like 12 hours old.

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  • jigglyjames29
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Posted 08 January 2008 - 10:31 PM

Or you can save it and cherish it forever :)

  • Old Man Jenkins

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Posted 08 January 2008 - 10:35 PM

Yes they can tell if its old or not but not all labs conduct the age test.

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Posted 08 January 2008 - 11:13 PM

Yes, urine grows bacteria after a few hours, so you'll need a different sample to use.

Also, that's definitely not sanitary in any way. Throw it out as soon as you can, dude.


Though they could probably tell if it was old urine, it wouldn't be because it had bacteria growing in it. Urine is essentially toned down ammonia and is pretty good at killing shit.

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Posted 09 January 2008 - 01:23 AM

there's a thing on the home test that can tell if the sample is expired or not.

next time at least try refrigerating it, or get a donor on the same day.

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  • hockeytree
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Posted 09 January 2008 - 01:25 AM

hahaha, I never thought of that. But that is really gross to keep with you....

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  • Kushd
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Posted 09 January 2008 - 01:30 AM

Becareful thou..my friend used to have this girl give him her piss one day they contacted him telling him he was pregnant :eek:

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Posted 09 January 2008 - 01:31 AM

yeah they do do sex tests. I know a guy who got caught the exact same way.

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  • gonemadwithmary
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Posted 09 January 2008 - 01:36 AM

nah, man, that's not a good idea, haha.

they can do tests on your piss to determine when it left your body (it has something to do with the bacteria level in it). that's one of the reasons why they have to do the testing on it within two days of it leaving your body (i'm almost positive it's two days, but don't quote me on that, haha).

keep tokin', man. :smoke:

EDIT: a good idea would be to have someone you know that doesn't toke up piss in a pill bottle (or something of that sort) the same day for you. by the time they do the tests on the piss, it's gotten to room temperature anyway, so they wouldn't be able to tell. and they DON'T do DNA tests, so it's safe to have someone else piss for you.

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  • oxalic32
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Posted 09 January 2008 - 01:47 AM

Do it American Beauty style (it works):
1) Get clean pee
2) Freeze clean pee
3) Let clean pee defrost before test
4) Let clean pee rise to body temp before test

If you leave piss around (room temp) it wont be usable.




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