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Amphetmethampheturql

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

This test detects the presence of amphetamine and methamphetamine drugs in your urine.

Quick summary

{"Screens for stimulant drugs like amphetamine and methamphetamine in urine","Used for workplace testing, substance abuse monitoring, or medical evaluation","Results are typically reported as positive or negative"}

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

Key facts at a glance

LOINC
40419-4
Short code
Amphet+Methamphet Ur Ql
Synonyms
Amphet+Methamphet Ur Ql
Category
chemistry
Sample
urine
Container
Sterile urine container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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/Methamphetamine urine test is a screening test that detects the presence of stimulant drugs called amphetamines in your urine. These drugs include amphetamine (commonly known as speed) and methamphetamine (commonly known as meth or crystal meth).

How is the test performed?

A urine sample is collected in a clean container. The sample is then analyzed in a laboratory using immunoassay techniques to detect the presence of amphetamine and methamphetamine. If the initial screening test is positive, a confirmatory test may be performed using a more specific method like gas chromatography-mass spectrometry (GC-MS).

Why might I need this test?

This test may be ordered for various reasons: workplace drug testing programs, monitoring individuals in substance abuse treatment, legal or forensic investigations, or as part of a medical evaluation when symptoms suggest drug use.

What do the results mean?

Results are typically reported as either 'Positive' (drug detected) or 'Negative' (no drug detected above the testing threshold). A positive result indicates recent use of amphetamine or methamphetamine. A negative result means no drug was detected, or the drug has already been eliminated from your system.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

How long do these drugs stay in my urine?
Amphetamines can typically be detected in urine for 1-3 days after use, though this varies depending on factors like dosage, frequency of use, individual metabolism, and kidney function.
Can prescription medications cause a positive result?
Yes, certain prescription medications containing amphetamines (such as Adderall, Ritalin, or Desoxyn) can cause a positive result. It is important to inform the testing facility of any prescription medications you are taking.
Is this test painful?
No, this test only requires providing a urine sample, which is painless and non-invasive.
Can a positive result be wrong?
While screening tests are highly accurate, false positives can occur. If the initial test is positive, a confirmatory test (GC-MS) is typically performed to verify the result. Certain medications or supplements may potentially cause false positive results.
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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