Since every sample is pre-tested in a laboratory setting, it is impossible to distinguish it from natural human urine coming from both genders and all ages. In every packaging contains a green insert which includes both instructions and manufacturing date. Now I'm wondering if the OP loaded up on the creatine before freezing the sample. At any rate, I freeze my own clean urine in several small pill bottles wash out first of course. One of the keys to keeping urine from going bad is to buy it from a reputable dealer. Usually even though it is not fresh, it is good to use.
One of the keys to keeping urine from going bad is to buy it from a reputable dealer. Can you test hair without the root? Urine can be frozen, thawed, and refrozen many times just use some common sense and try not to let it come up to room temperature then sit around for another hours before you refreeze it. Thats what I used to think. A frozen specimen maintains the same qualities as it had just before it froze.
How should I collect and store a pee (urine) sample? - NHS
It isn't that freezing does anything bad to the urine but it can only slow down the decay of the urine so much then eventually the urine will become no good after about a year. But, I have also heard you can refreeze. Find a Veterinarian Near Then go about your morning business or whatever you do. Q: Can I add anything to my Quick Fix urine sample, for instance my own urine? I have been using my own frozen urine for a couple of years now.
Giles HG , Meggiorini S. Now I'm wondering if the OP loaded up on the creatine before freezing the sample. While the urine itself may have been free of bacteria, the bottle may not have. The bacteria in the urine sample can multiply if it is not kept in a fridge. There are a couple of ways you can do it, but allowing it to slowly melt before you heat it is the best method.