Amphetaminesurqlcfm
This test checks for the presence of amphetamines (stimulant drugs) in your urine using a confirmatory method.
{"Detects amphetamine and methamphetamine use in urine","Used for workplace testing, monitoring, or medical evaluation","Results can remain positive for several days after use"}
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?
How long will I need to provide a urine sample?
Will the test tell me how much drug I took?
Can second-hand exposure cause a positive result?
Is fasting required before this test?
Sources
- 1
- 2
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
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