How long does urine last if kept refrigerated for a drug test?

If you are going to keep “real” urine on hand for drug testing, freeze it (this will cause less bacteria to grow). When you need to use it, thaw it out by putting the bottle with the urine in it warm water or hold it under the faucet and let it thaw itself out that way. Do not microwave it. read more

Always keep human urine in an air tight container. It will remain good at room/body temp for at least 8 hours, refrigerated up to 30 days and frozen up to 1 year. Hope that helps. read more

You can keep urine at room temperature for about two days before you would need to refrigerate it. In the refrigerator, it will stay good for about a week but if you need to keep it for longer than that, you will need to freeze it. read more

Urine drug levels are good at room temp or in the fridge for several days. Microalbumin testing is also good for several days in the fridge. However, if the urine is being collected for a routine urinalysis or a microscopic, the urine needs to be tested as soon as possible. read more