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Amphetaminesurcfmmcnc

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

A laboratory test that detects amphetamine-type stimulants in urine using highly accurate confirmatory methods.

Quick summary

{"This test identifies amphetamine, methamphetamine, and related stimulants in urine","Confirmatory testing uses advanced methods like GC-MS or LC-MS/MS for accuracy","Results are typically positive for 2-4 days after use","Common reasons for testing include workplace screening, substance abuse monitoring, and medical evaluation","A positive result may indicate legitimate prescription use or illicit drug use"}

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

Key facts at a glance

LOINC
20410-7
Short code
Amphetamines Ur Cfm-mCnc
Synonyms
Amphetamines Ur Cfm-mCnc
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 Amphetamine Urine Confirmatory Test is a specialized laboratory test that detects the presence of amphetamine-type stimulants in your urine. Unlike initial screening tests, confirmatory testing uses highly sophisticated methods such as Gas Chromatography-Mass Spectrometry (GC-MS) or Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS) to precisely identify and measure specific drugs and their metabolites. This test can detect amphetamine, methamphetamine, MDMA (ecstasy), and other related stimulants.

How is the test performed?

A urine sample is collected in a sterile container. The sample is then sent to a laboratory where it undergoes complex analytical processes. The confirmatory method separates the individual compounds in the sample and identifies them based on their molecular characteristics. This process is much more specific and accurate than initial immunoassay screening tests, which can sometimes produce false-positive results.

How long do these drugs stay in urine?

Amphetamine-type stimulants can typically be detected in urine for 2-4 days after use, though this varies depending on factors such as dosage, frequency of use, individual metabolism, kidney function, and body mass. Chronic or heavy use may result in longer detection windows.

What do the results mean?

A positive result indicates that amphetamine-type stimulants were detected in your urine. However, this test does not indicate when the drug was taken, the amount used, or whether impairment is present. Certain prescription medications (such as Adderall, Dexedrine, or some ADHD treatments) can produce positive results. It is important to inform the testing facility of any prescription medications you are taking.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

Will I be notified before the test?
For workplace testing, you typically receive advance notice. For forensic or legal testing, sample collection is often observed to ensure accuracy and prevent tampering.
Can over-the-counter medications cause a positive result?
Some cold medications, nasal decongestants, and weight loss products containing pseudoephedrine may potentially cause positive results. Always disclose all medications you are taking before the test.
Can a positive result be caused by second-hand exposure?
It is unlikely for second-hand exposure to produce a positive result on confirmatory testing, as these methods are highly sensitive to actual use. However, very heavy exposure in enclosed spaces might potentially affect results.
Can diet or supplements affect the test?
Certain dietary supplements and herbal products have been reported to potentially cause false positives on screening tests, but confirmatory testing is specific enough to distinguish between these compounds and actual amphetamines.
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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