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How to Keep Synthetic Urine Warm

Most employers use urinalysis for drug testing, and this may be behind the rising demand for synthetic urine in recent years. However, proper usage of the product is a must for success.

Reasons to Synthetic Urine Warm

As initial drug screening often does not include checking a sample’s validity, the testing staff merely checks the submitted specimen’s temperature as a way of ensuring that it hasn’t been substituted. Because natural human urine is warm, you should also submit your synthetic urine sample warm; otherwise, the testing staff will think that it’s fake and reject it. Of course, if you’re caught, you’ll be in trouble, and that is the last thing you want.

Human Urine Normal Temperature

Human urine’s normal temperature can be anywhere from 94F to 96F. The staff usually records the temperature of a drug test sample within 4 minutes of receiving it, knowing that ambient temperature can cause changes in it. Acceptable range is from 90F to 100F, and any sample that lies outside of this deemed suspicious.

Heating Synthetic Urine

There are three common ways of heating synthetic urine:


Microwaving synthetic urine is the easiest method of increasing its temperature by far. Just put the container inside a microwave and let it stay for around 10 seconds. Use a temperature strip to determine the usability of the sample. Remember that too much heat can destroy it, so don’t leave it in too long. Even if it cools down, the properties of natural human urine will not be restored.

Hand Warmers

Hand warmers are very handy and available anytime, and they’re a more practical alternative to the microwave. You can just pour the liquid into a tiny container or a sealed bag and wrap it with the handwarmer using a tape or elastic band. Not all hand warmers work the way however. Get one that maintains a 90F to 100F heat range and will remain there for as long as you need it to.

Your Body

At the end of the day, you may only have to rely on your own body to keep synthetic urine warm. Put the sample in a sealed plastic bag and tuck it in your inner thighs or even inside your underwear. Under the armpits is also a good spot, and if you’re a woman, you can secure it in your bra.

Practice Makes Perfect

Lastly, make it a point to practice your moves before going in for testing. You should know what you have to do and how you can do it best so as not to appear suspicious. More practice means you will be more relaxed during the testing, instead of being all anxious and fidgety.

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