Amphetaminesctourcfmmcnc
This test uses advanced laboratory methods to confirm whether amphetamine drugs are present in your urine sample.
{"A confirmatory test verifies results from an initial drug screen","Uses highly accurate mass spectrometry technology","Can detect amphetamine use within 2-5 days","Results are typically sent to the ordering doctor within a few days","Positive results may indicate legitimate medication use or illicit drug use"}
Key facts at a glance
- LOINC
- 19267-4
- Short code
- Amphetamines CtO Ur Cfm-mCnc
- Synonyms
- Amphetamines CtO 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 Confirmatory Test is a specialized laboratory test that analyzes your urine to confirm the presence of amphetamine-type drugs. This test is performed after an initial screening test shows a positive result. It uses highly sensitive and specific equipment called a mass spectrometer to provide definitive results.
Why is this test ordered?
This test is commonly ordered for several reasons: workplace drug testing programs to verify initial screening results, monitoring individuals in substance abuse treatment programs, legal or forensic investigations, or when healthcare providers need to confirm a positive drug screen before making important medical decisions.
How do I prepare for this test?
No special preparation is typically needed. You will be asked to provide a urine sample in a private bathroom. The collection may be observed to ensure the sample is not tampered with, which is standard procedure for confirmatory drug testing. Inform your doctor about any prescription medications, over-the-counter drugs, or supplements you are taking, as some substances may affect the results.
What do the results mean?
A 'positive' result means amphetamine or methamphetamine was detected in your urine at levels above the established cutoff. This could be from prescription ADHD medications (like Adderall or Ritalin), cold medications containing pseudoephedrine, or illicit amphetamine/methamphetamine use. A 'negative' result means no amphetamines were detected above the cutoff level. Your doctor will discuss what your results mean in the context of your specific situation.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Frequently asked questions
How long can amphetamines be detected in urine?
Will my prescription medications affect the test?
How accurate is this test?
Who will see my test results?
Can foods or supplements cause a positive result?
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