The Best Methods for Storing Pee for an Upcoming Drug Test

Robert J. McGrath
Robert J. McGrath, Ph.D

Last updated on 2024 May 28

You can store urine in the freezer for up to six months. However, if you prefer to keep it in the fridge, you can only store it for up to 24 hours.

Storing human urine can be risky as it can spoil easily.

But don’t worry, I’ll tell you how to minimize those risks and keep your urine fresh for a drug test.

If you plan to store clean urine for a future drug test, you actually need to go through four steps:

  1. Get a container.
  2. Collect the urine.
  3. Store it properly.
  4. Prepare it for a drug test.

I’ll cover all these steps in detail.

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Choosing the right container for storing urine

When it comes to storing urine for a drug test, the type of container you use is crucial.

You’ll need at least 30ml of urine for a drug test, but the Department of Transport requires 45ml of urine.

The best option is to use a 50ml plastic bottle.

bottles for storing urine

Visine bottles are too small, just 15ml, and big plastic bottles are not good because there’s a lot of air, and there are more chances that the urine will spoil.

Another reason for using small bottles is the drug testing procedure.

Before the drug test, you will be required to empty your pockets and remove unnecessary clothes like hats, jackets, etc.

The collector will look through your items, and if he finds something intended to cheat the drug test, you will be required to go through the directly observed drug test.

Collectors are aware that visine bottles are used to bring urine to drug tests, so you need a small bottle that you can hide discreetly on your body.

By using a 50ml plastic bottle, you can avoid any issues during the drug testing procedure and store your urine securely.

The best thing to put urine in for a drug test is  a special urine bottle with an attached temperature strip. The temperature strip will help you know the temperature of the urine before submitting it.

You can purchase such a bottle on Amazon, or you can buy a temperature strip separately and attach it to any bottle.

How long is urine good for at room temperature for a drug test?

According to Labpedia, urine can stay good at room temperature for up to 2 hours. Research published in PubMed says it can sit out for up to 40 hours.

If you’re using someone else’s urine, make sure it doesn’t spend more than 2 hours at room temperature. Alternatively, you can use synthetic urine, which doesn’t have a time limit and stays good as long as you need it.

To keep your urine sample fresh overnight or for less than 24 hours, you can put it in the fridge.

Collecting clean urine

Urine can spoil quickly because of bacteria in urine and air, so the room for collecting must be as clean as possible.

To prevent bacteria from your hand getting into the urine, use vinyl disposable gloves.

Pee in a bottle and close it as fast as possible to avoid contamination.

synthetic urine bottle and gloves

The best option is to put the urine directly into the bottle that you will use for the drug test.

Pouring urine from one bottle to another will add bacteria to the urine and increase the chances of spoiling.

By following these simple steps, you can collect clean urine that is ready to use for a drug test.

It’s important to remember that proper storage and handling of urine is crucial to ensure accurate and reliable drug test results.

How long can you keep a urine sample in the fridge?

To preserve clean urine for a drug test, you can keep it in the fridge overnight. Theoretically, it can stay in the fridge for up to a month. However, after a month, it won’t be good for detecting drugs.

Over time, urine changes its composition and may fail validity checks for pH, creatinine, specific gravity, etc. The best practice is to keep it in the fridge for no more than 24 hours. Use an airtight sterile container to prevent contamination.

Consider the time it takes to get to the drug testing facility. Ensure the total time the urine spends at room temperature is less than 2 hours.

Can you freeze urine?

To store urine for a drug test, you need to prevent bacteria from growing. You can safely freeze urine and thaw it before the test.

According to an article on PubMed, urine samples can be safely frozen and thawed at least five times. The lab cannot tell that the urine was frozen.

Theoretically, expensive techniques could detect changes in urine composition, but pre-employment tests don’t use these methods.

To store your urine in the fridge, use a proper container. It must be clean and the right size. Drug tests require 1-1.5 ounces of urine, so use a 2-ounce container.

It’s best to use the bottle you’ll use for your drug test to avoid contamination. Special bottles with temperature strips, available on Amazon, are useful for checking the urine temperature before submitting it. They’re also discreet, so you can hide them in your scrotch area.

Store this bottle in the freezer, and you can keep it there for up to 1 year.

How to store urine for a drug test

First, you need to decide how long you need to store it.

how to store urine for a drug test

Urine can sit out unrefrigerated at room temperature for about 10 hours without spoiling. So, you can collect it in the evening and store it overnight for a morning drug test.

However, if you need to store it for up to 24 hours, you should put it in the fridge. In a fridge urine is good for up to 24 hours.

Make sure to seal the urine bottle to prevent any bacteria in the fridge from getting inside the bottle and contaminating the urine.

It’s even better to put the bottle in a sealed bag.

If you need to store the urine for a longer time, you can freeze it for up to 6 months.

To freeze the urine, put the sealed urine bottle in a plastic bag and place it into the freezer.

Remember that freezing the urine multiple times increases the risk of contamination and that the urine will spoil, so I recommend freezing it only once.

If you need to freeze the urine for several uses, use several smaller bottles.

Thawing frozen urine

You can thaw frozen urine using three methods:

Room temperature: Thawing it at room temperature can take up to 1 hour for a 50ml urine bottle.

Warm water: You can place the urine bottle in a pot with warm water. It will take about 20 minutes to thaw, depending on the water temperature.

Make sure that the water is not too hot and is about body temperature – this will prevent rapid bacteria growth and degradation of the urine.

Microwave: Thawing in a microwave will take 45 seconds to 2 minutes.

Place the urine bottle in the microwave and use 10-second intervals to thaw the urine.

Keep watching the urine temperature to ensure it does not overheat. If you overheated the urine, let it sit out for several minutes to cool down.

Can you use 3-day-old urine for a drug test?

You can only use 3-day-old urine if you’ve stored it in the freezer. Refrigerating it will result in spoilage due to bacteria growth.

Below is a photo comparing fresh urine to urine that has been refrigerated for 3 days.

As you can see, the urine appears cloudy and the presence of bubbles indicates a significant amount of bacteria growth.

Can you use someone else’s urine?


I must emphasize that we do not recommend using someone else’s urine for a drug test.

You never know what drugs the person may have actually used, even if they think they’re clean.

For instance, cannabis metabolites can stay in the body for a long time, even if the person smoked it weeks ago.

Additionally, human urine spoils quickly, and if it’s not stored properly or submitted at the right temperature, it will be detected during the drug test.

So, avoid taking the cheap shortcut of using someone else’s urine.

A word of caution

If you’re facing a drug test and considering submitting your own clean urine or someone else’s, think twice.

You can’t be sure that the urine is unspoiled until it’s submitted.

If passing the drug test is essential for you, for instance, if you want a high-paying job, then you need to consider using high-quality synthetic urine instead.

It costs only $90 and will allow you to pass the drug test without any hassle.

But, you need to ask yourself, is the $90 worth the risk of failing the test and going through direct observation procedure?

Incorrect urine temperature is the primary reason people fail drug tests when submitting synthetic or someone else’s urine.

Therefore, you still need a reliable method to maintain the sample’s warmth before a drug test. This often involves purchasing hand warmers or heat pads.

However, you could avoid all that trouble by opting for high-quality synthetic urine and going to your drug test confidently without any risk of getting caught.

Choose these synthetic urine kits and say goodbye to urine storage hassles!

Here are the best synthetic urine kits on the market today, designed to help you pass the drug test without any risk.

Sub Solution – high quality urine for best price

clear choice sub solution urine contents
Sub Solution is the bestselling and overall best synthetic urine kit on the market today. It offers the perfect balance between price and product features.

Containing at least 11 chemicals found in human urine, Sub Solution includes heat activator powder to ensure that the urine is heated to the correct temperature before submission.

The best part? It comes at the best price $90.

The only downside is that you need a place on your body to hide the urine bottle, but you can easily put it in your underwear or use special urine holder.

Incognito Belt – best stealth solution

clear choice incognito belt

If you’re looking for a premixed synthetic urine solution, Incognito belt is an excellent option.

It comes with enough synthetic urine for two uses, as well as two heat pads to maintain the correct temperature.

The velcro adjustable discreet belt allows you to hide the urine on your waist, and the rubber tube and convenient clip enable you to deliver the urine discreetly.

incognito belt discreetly placed on a waist male

While the price is a little high, the Incognito belt is a great investment to pass your drug test without any risk.


In conclusion, storing urine for a drug test involves meticulous steps that require careful planning, collection, storage, and preparation. While the process might seem straightforward, it poses risks due to the potential for spoilage and the strict requirements during the testing procedure.

As we’ve explored, the choice of container, the method of collection, and the strategies for storage are all critical to ensuring that the urine remains viable for testing.

However, it’s important to acknowledge the complexities and risks involved in this process. The potential for contamination, the strict temperature requirements, and the ethical considerations make it a daunting task.

For those seeking a reliable and stress-free solution, the Incognito Belt presents an outstanding alternative. This premixed synthetic urine solution, designed with discretion in mind, eliminates the need for storing real urine altogether. Its stealthy design allows for easy concealment, and the included heat pads ensure the sample maintains the correct temperature.


How long can you store urine for a drug test in the freezer?

You can store urine in the freezer for up to six months. This method helps prevent bacteria growth and keeps the urine fresh. Make sure to use a clean, airtight container to avoid contamination.

How do you store urine for a drug test in the fridge?

To store urine in the fridge, use an airtight sterile container. Urine can be kept in the fridge for up to 24 hours. Ensure it stays sealed to prevent bacteria from contaminating it. Always use it within this time frame for accurate results.

What is the best container to use for storing urine for a drug test?

The best container for storing urine is a 50ml plastic bottle. This size meets the Department of Transport’s requirement of 45ml. It’s small enough to hide discreetly but large enough to hold the necessary amount of urine.

 How should you collect and handle urine to keep it fresh for a drug test?

When collecting urine, use a clean container and wear disposable gloves to avoid contamination. Collect the urine directly into the bottle you’ll use for the test. Seal it immediately after collection to minimize bacteria exposure. Store it properly to keep it fresh.

Can you use synthetic urine for a drug test, and what are its advantages?

Yes, you can use synthetic urine for a drug test. It doesn’t spoil and stays fresh indefinitely. It is easier to store and handle, reducing the risk of contamination. Synthetic urine kits often come with temperature strips and heating elements to ensure proper temperature during the test.