How many millimeters (ml) of urine do you need for a urine drug test?

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How many millimeters (ml) of urine do you need for a urine drug test?

Urine drug testing detects evidence of recent drug use in a sample of urine. Most people have undergone a urine drug test at some point in their lives, whether it was for pre-employment testing, random on-the-job testing, or even testing for medical issues in the doctor’s office, such as a urinary tract infection (UTI). Sometimes when a person is aware they will be undergoing a urine drug test or urinalysis for medical issues, they worry they will be unable to produce enough urine. Maybe they are dehydrated, or they forgot they were testing and emptied their bladder just before testing. How many people have ever had this worry? If the truth is told, quite a few!

Each laboratory has a fixed-size urine testing cup they use. This decision is made by each laboratory. The minimum standard volume of urine needed for testing is 30 milliliters (ml). By the way, 30 ml is equivalent to 1 Fl oz or 1/8 cup, which doesn’t seem like a high volume of urine. However, the volume of urine achieved with anyone collection is usually determined by how hydrated the person is at the time of collection. If a person has been involved in activities involving sweating and is dehydrated, the minimum amount of 30 ml may be more difficult to produce.

Why does the urine drug testing cup seem so large? The size of the cup does not matter because some people are able to produce 100 ml or more when giving a specimen. Extra volume is not a problem because the excess will be disposed of properly unless further testing is needed. For a specimen that is negative, the laboratory only requires about 3-5 ml, depending on the number of drug categories tested. If the sample is positive, then more material is required for additional testing. Most people in Florida know it’s a healthy decision to stay hydrated due to the high heat and humidity; however, staying hydrated is also very beneficial if you are asked to undergo a urine drug test. Remember, the very minimum amount of urine needed for testing is 30 ml, but more may be required if the specimen tests positive.

If you would like to find out more about all types of drug testing, or you would like advice as to which type of drug tests would be best for you to purchase, contact Halux Diagnostic via a form on the website at www.haluxdiagnostic.com or give us a call at our 407-680-2209.

Sources:
https://www.tafmed.org/how-much-urine-is-needed-for-a-drug-test/
https://urinewarmer.org/how-much-urine-is-needed-for-drug-tests/
https://www.quora.com/What-is-the-minimum-amount-needed-for-a-urine-sample-Why-is-the-sample-cup-so-big

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