How to Store Pee After Collection
If you have a vacuum seal, the clean urine can be kept at room temperature for several days, as long as it is kept out of direct sunlight.
You can keep it in the fridge for up to six months and in the freezer for one year. When the sample is removed from the vacuum seal, it is good for 30 days in the fridge and six months in the freezer. Don’t leave it at room temperature for more than 18 hours.
Preparing Stored Urine for Use
When you are ready to use the clean urine sample, bring it up to temperature by running it under warm water. Shake the sample well so that any particles dissolve. It should be thawed slowly and at a constant rate to stop crystals from forming. If they do, you can filter the sample.
Urinalysis is the most common method of drug testing. It was the very first laboratory test to be developed and dates back over 6,000 years. Urinalysis was first introduced as part of the routine physical examination in 1827. In drug testing, urinalysis will typically test for the drug itself and for the substances produced by your body when it metabolizes the drug.
Drugs that will often show up in a urine drug test include anabolic steroids, barbiturates, amphetamines, benzodiazepines, codeine, morphine and other narcotics/opiates.