I was wondering if anyone knew how long urine would stay good to be tested if I got it from my friend. Could I just keep it in an air tight container? Does it go bad? I get randomly drug tested so I was thinkin I could just have a sample of clean piss hidden in my freezer or in my room or something. Then just put it in a condom and maybe use a heat pouch or something to warm it up. Well if anyone knows how long it stays good, please LMK!!
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How long would a urine sample stay good?
Posted 03 December 2003 - 11:21 PM
"Urine samples are best collected with the addition of ascorbic acid to urine to prevent oxidation of labile metabolites. Fifty mg of ascorbic acid may be added to 50 ml of urine (1mg/ml). The urine should be placed at 4 degrees C immediately, labeled, and frozen at or below -20 degrees C within 8 hours. Remove any precipitate before freezing by centrifugation. (*Note, I skipped that part and mine stayed good for months.) Samples may be stored frozen at -20 degrees C for several months without loss of metabolites. Avoid long-term storage of frozen urine samples in frost-free refrigerators. "
Posted 03 December 2003 - 11:53 PM
Vitamin C! You can get it anywhere, almost. I crushed the tablet really well into a fine powder and then added it to the urine. I shook the container really well and froze it. Before I froze it, some C settled in the bottom of the container but after I thawed it out to use it, there was nothing at the bottom so you will be good to go!
Posted 09 July 2007 - 05:57 PM
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