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Urine Temperature is Key to Accurate Testing

Urine Temperature check

Urine Temperature – The Art of Drug Testing

I was reminded a few days ago about an individual who wanted a drug test for their job. They requested a rapid 10-panel drug test which is fairly standard.

We try to be vigilant when we test and have all the safeguards in place to catch the cheaters. But sometimes a donor will try and sneak through by whatever means possible. In this case, they expressed that they needed to go to the bathroom otherwise they would pee themselves. This is a red flag to us as it generally indicates that they are carrying a fake sample.

Urine Temperature - The Art of Drug TestingLet me explain: Sadly it’s so easy to buy fake urine on the internet and use it to pass a drug test. There are many brands available that can mimic real urine. The sample comes with full instructions on how to use it. It evens comes with a heater pack to bring the sample up to temperature. Brands like Ur-In-Luck promote how easy it is to pass a drug test by substituting their product for real urine.

So the cheater comes in and expresses that they need to go desperately. This tells us that they have set the heater to warm the fake urine up so it passes the test. The industry standard permits urine temperature from 90° to 100° F. At this point we make them wait for as long as possible. Up to 15 minutes before we take them in for testing. Why do we do this?

Urine Temperature – And Catching the Cheaters!

The donor is asked to come into the testing area, we ask them to empty their pockets, wash their hands then go into the cubicle and provide a sample. We listen near the door for the normal signs of urination. Invariably we hear only rustling and no urination sound. The donor promptly comes out with a urine sample and presents it to the administrator for analysis.

This is how we catch them. We test the urine temperature. We do not accept the general rule for temperature which is 90° to 100° F. With many years of experience we know that the temperature is always around 96° F. The body temperature is 98.6° F., so allowing for a small temperature drop 95, 96, 97 or 98° F. is where the urine temperature should be.

The cheaters don’t know this, well not until they read this article. So we check the temperature, invariably it is too hot, anywhere up to 108° F. They make their excuses that they have a fever or they are sick. We have heard it all before. It can also be too low, anything below 93° F. is not acceptable. But what if the temperature is in range and their heater got it right? The key is the smell. Fake urine has no smell. BUSTED!

Urine Temperature
Read the temperature of the sample immediately. 93 to 98F is the acceptable range.

At this point, we tell them the sample is not acceptable and ask them to go sit in the waiting room for at least 30 minutes before they provide a fresh sample. By this time the heater has stopped working and the fake sample they brought with them is insufficient for a second attempt. When we test them again as we did with this individual we see that they are presumed positive for Cocaine. BUSTED again!


If you are parent or testing at the office, you have to be cuter than they are and see the signs. Monitor every stage of the test, look for body language and always listen at the door for the sound of urination. It doesn’t take long to know who the cheaters are even before their tested. Use a specimen cup with a temperature strip affixed to it and don’t accept excuses for why the urine temperature is out of range.

Urine Temperature

The next time an individual brings in a product like Ur-In-Luck or Quick Fix to beat the test, they will be Out-of-Luck! Happy testing.

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Lab Tech at Buy a Test Kit
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