Best Practices For Storing Urine For a Drug Test

Daniel Miller avatar
Daniel Miller

Last updated on May 31, 2023

As a former drug testing laboratory expert, I know that storing human urine can be tricky. Urine spoils easily.

If drug test collector will see spoiled urine, he will require you to submit the sample under direct observation.

However, if you need to store your own urine sample for a drug test, there are ways to minimize the risk of spoiling and keep it fresh.

Refrigeration: You can keep a urine sample in the fridge overnight for up to 24 hours. This is the best way to preserve urine, but it still has limitations.

Freezing: You can store urine frozen for up to 6 months. However, freezing can affect the chemical composition of the urine and potentially impact the accuracy of the drug test.

Room temperature: You can keep urine at room temperature for up to 4 hours, but this is risky because urine spoils quickly.

An important disclaimer

We do not recommend using someone else’s urine for a drug test. There are several reasons for this:

You never know what drugs the person actually used. They may think they are clean, even if they smoked cannabis a couple of weeks ago. Cannabis metabolites can stay in your body for a long time.

Human urine spoils fast, even when kept in a fridge. If the collector sees that the urine is spoiled, that’s considered cheating, and you will be required to submit a new sample under direct observation.

Refusing to submit a new sample or using someone else’s urine can have serious consequences. It will be recorded and sent to a medical review officer and your employer.

You still need to submit your urine sample within the right temperature range, so you’ll still need a heating pad. Using a bottle of water as a substitute is risky.

In conclusion, do not take the cheap shortcut of trying to get someone else’s urine to submit. It’s not worth the risk of getting caught and facing the consequences. Use high quality synthetic urine instead.

However, if you need to store urine sample for a drug test, there are ways to minimize the risk of spoiling and keep it fresh.

Are You Willing to Risk Failing a Drug Test?

Human urine can go bad because of the wrong temperature or bacteria.

When the stakes are high, opt for the Incognito Belt, which includes premixed synthetic urine on a stealth belt.It is a safe and reliable way to pass your drug test.

Incognito Belt Premixed Synthetic Urine on a belt

How to collect urine sample

First things first, it’s important to know that urine can spoil quickly because of bacteria in urine and air. That’s why the room for collecting must be as clean as possible.

I recommend using a bathroom or private room where you can close the door and minimize outside contamination.

When collecting urine, use vinyl disposable gloves to prevent bacteria from your hand to getting into the urine.

Pee in a bottle and close it as fast as possible to prevent any outside contaminants from entering. It’s best to put the urine directly in the bottle that you will use for drug test.

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


Now, let’s talk about what kind of container to use to store urine for a drug test.

You’ll need at least 30ml of urine for a drug test, but the Department of Transport requires 45ml. So, the best option is to use a 50ml plastic bottle.

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.

You could use either a re-sealable bag or a bottle, depending on how long you intend to store the urine.

If you are refrigerating or freezing the urine for more than a day, a bottle might be the best way to go, thanks to the reduced risk of leakages.

store urine for drug test in a fridge

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.

The collector will look through your items, and if they find something that is 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.

It’s better to get a small bottle with a temperature strip attached. The temperature strip will make it easier to control urine temperature before submitting.

And remember, the temperature of your urine is crucial for a successful drug test.

How to store urine

When it comes to storing urine, it’s important to first decide how long you need to store it for. For short-term storage, up to 24 hours, you can store it in the fridge.

For long-term storage, it requires freezing.


But be careful when storing urine in the fridge because refrigerators contain a lot of bacteria from foods.

If you leave food for a significant amount of time in the fridge, you may see mold on it. These bacteria can contaminate and spoil the urine, causing it to be rejected at the drug testing facility.

So, make sure that your fridge is clean and keep everything as clean as possible.

How to defrost the urine

It’s usually so tempting to speed up the thawing process by heating the urine in the microwave for a few seconds, and most sources recommend it, by the way.

urine in microwave

You could do it.

But you need to be very careful since the risk of overheating and ruining the urine quality is very high.

How to warm urine for a drug test

Wrong urine temperature is the main reason why people fail drug tests when trying to submit synthetic or someone else’s urine.

The specimen temperature must be within the acceptable range (97-100 Fahrenheit).

If it’s outside that range, the collector will decide that you attempted to tamper with the specimen at the collection site, and you’ll be required to go through a direct observation drug test.

The sample must be submitted within 2 minutes, and it can cool down, so 90-100 Fahrenheit temp is ok.


There are two options to warm urine before a drug test: handwarmers and heat activator powder.

Handwarmers are a good option but may fail in rare cases.

They will take 1 hour to heat the bottle to the required temperature. To save time, you can preheat the urine with a microwave.

Heat activator powder

Heat activator powder is another option. This powder should be added into the urine, and it raises the temperature within seconds.

It’s reliable and far superior to a heat pad, but it’s not easy to buy. It is included in some high-quality synthetic urine kits.

Consider your options carefully

While it may seem like a good idea to use clean urine or someone else’s urine to pass a drug test, there are several risks involved.

Firstly, there is no way to be completely sure that the urine is clean and hasn’t been spoiled until you submit it for testing.

Secondly, the consequences of getting caught can be severe and can include losing your job or facing legal action.

High-Quality Synthetic Urine

Fortunately, there is a safer and more reliable way to pass a drug test. High-quality synthetic urine is available for purchase at a cost of around $85, which includes heating powder to bring the sample to the correct temperature.

This synthetic urine is designed to mimic the chemical composition and properties of human urine, making it an effective and safe way to pass a drug test.

Is it worth the gamble?

If passing the drug test is important to you, for example, if it’s required for a high-paying job, it’s important to consider whether the risk of using clean urine or someone else’s urine is worth it.

For just $85, you can ensure that you pass the drug test without having to worry about the risks and consequences of getting caught.

In summary, using clean urine or someone else’s urine to pass a drug test is a risky proposition. High-quality synthetic urine is a much safer and reliable way to pass a drug test, and it’s worth the investment to ensure that you don’t jeopardize your career or legal standing.

Best synthetic urine to pass a drug test without risk

Sub Solution

The Sub Solution Synthetic Urine Kit is the bestselling and overall best synthetic urine kit on the market today.

This kit offers the best balance between price and product features, containing at least 11 chemicals found in human urine and includes heat activator powder.

It is also available at the best price. However, one downside is that you need to find a place on your body to hide the urine bottle.

You can use a stash leg belt or special underwear to solve this problem.

Incognito Belt

The Incognito Belt Premixed Synthetic Urine on a Belt is a more convenient and discreet option for passing a drug test.

This kit comes with premixed highest quality synthetic urine that is enough for two uses, along with two heat pads to maintain the correct temperature.

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

However, this kit is slightly more expensive than the Sub Solution Synthetic Urine Kit.

In summary, both the Sub Solution Synthetic Urine Kit and the Incognito Belt Premixed Synthetic Urine on a Belt are safe and reliable alternatives to using someone else’s urine to pass a drug test. While the Sub Solution kit offers the best balance between price and quality, the Incognito Belt kit offers a more convenient and discreet option.