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Amphetaminesurqlcfm

Published: August 9, 2026Updated: August 16, 2026

This test checks for the presence of amphetamines (stimulant drugs) in your urine using a confirmatory method.

Quick summary

{"Detects amphetamine and methamphetamine use in urine","Used for workplace testing, monitoring, or medical evaluation","Results can remain positive for several days after use"}

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
16369-1
Short code
Amphetamines Ur Ql Cfm
Synonyms
Amphetamines Ur Ql Cfm
Category
chemistry
Sample
urine
Container
Sterile urine container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
confirm
Specimen volume
10 mL
Stability
Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

What is this test?

The Amphetamines Urine Test is a confirmatory laboratory test that detects the presence of amphetamine-type stimulants in your urine. These drugs include amphetamine (such as Adderall) and methamphetamine (such as crystal meth). The 'confirmatory' method means it uses more advanced technology (typically mass spectrometry) to accurately identify and confirm the specific drug or drugs present.

How is the test performed?

A urine sample is collected in a sterile container. You will be given instructions on how to collect a 'clean catch' sample to avoid contamination. The sample is then sent to a laboratory where it undergoes confirmatory testing using specialized equipment that can precisely identify amphetamine compounds.

Why might I need this test?

This test may be ordered for several reasons: workplace drug screening programs, monitoring patients in substance abuse treatment programs, pre-employment screening, or as part of a medical evaluation when symptoms suggest stimulant use. It may also be used to verify positive screening results from earlier tests.

What do the results mean?

A 'positive' result means amphetamines were detected in your urine at the time of testing. A 'negative' result means no amphetamines were detected, or levels were below the test's detection threshold. It's important to note that some prescription medications (such as certain ADHD medications) may cause a positive result for amphetamines.

How long do drugs stay in urine?

Amphetamines can typically be detected in urine for 1-3 days after use, though this varies based on factors like dosage, frequency of use, metabolism, kidney function, and urine pH. Chronic or heavy use may result in longer detection windows.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

Can prescription medications cause a positive result?
Yes. Certain prescription medications containing amphetamines (like Adderall, Dexedrine, or Vyvanse used for ADHD) or methamphetamine (like Desoxyn) can cause a positive result. Always inform the testing facility and your healthcare provider about all medications you are taking.
How long will I need to provide a urine sample?
The sample collection takes only a few minutes. You will be directed to a private bathroom to collect the sample. The entire appointment typically takes 10-15 minutes.
Will the test tell me how much drug I took?
No. This is a qualitative test that indicates presence or absence of amphetamines. It does not measure the amount consumed or determine exactly when the drug was used.
Can second-hand exposure cause a positive result?
It is unlikely but possible in extreme exposure situations (such as being in an enclosed space with heavy methamphetamine smoke). Confirmatory testing helps distinguish between actual use and passive exposure by measuring specific drug levels.
Is fasting required before this test?
No. You do not need to fast before providing a urine sample. You should continue to take any prescribed medications as directed unless otherwise instructed by your healthcare provider.
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy