Urine samples should have few bacteria if refrigerated, because bacteria coming off the body grow poorly at low temperature. I would say urine would have fewer bacteria than tap water.
Doesn't it sound like a good science project?
How long does it take for pee samples to have bacteria if only refrigerated?
The amonia should prevent the bacteria from growing.
Reply:It depends on the intensity of refrigeration, but....it should be safe....for over few days.....!! I think
Reply:Urine samples are only good for analysis purposes for less than one hour (for crystal observatioin -- they tend to break down after that). A refrigerated sample to be used for other analyses is probably good for about 12-24 hours.
As long as the sample is in a sterile, enclosed container, there should almost no bacteria in a healthy person/ animal's urine, unless a UTI is suspected. Urine inside the bladder is considered sterile.
camellia
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