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Amphetaminesurqlcfm200ngml

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

This test detects the presence of amphetamines in urine using a confirmatory method with a cutoff of 200 ng/mL.

Quick summary

{"This test identifies amphetamine use in a urine sample","Results are reported as positive or negative based on the 200 ng/mL cutoff","A confirmatory method (GC-MS or LC-MS/MS) ensures accurate results","The test is used for medical, workplace, or legal purposes"}

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

Key facts at a glance

LOINC
14309-9
Short code
Amphetamines Ur Ql Cfm>200 ng/mL
Synonyms
Amphetamines Ur Ql Cfm>200 ng/mL
Category
chemistry
Sample
urine
Container
Sterile urine container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
confirm-ng-ml
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 [Presence] in Urine test is a confirmatory drug test that detects whether amphetamines or their metabolites are present in your urine. This test uses advanced laboratory methods (typically Gas Chromatography-Mass Spectrometry or Liquid Chromatography-Tandem Mass Spectrometry) to confirm positive screening results. The test has a cutoff threshold of 200 ng/mL, meaning results at or above this level are reported as positive.

Why is this test ordered?

This test may be ordered for several reasons: monitoring patients on amphetamine medications (such as for ADHD), workplace drug testing programs, pre-employment screening, legal or forensic investigations, or monitoring substance abuse treatment programs. Healthcare providers may also order this test if they suspect someone is using illicit amphetamines.

How is the test performed?

A urine sample is collected in a sterile container. The sample is then analyzed in a laboratory using confirmatory testing methods that can identify and quantify specific amphetamine compounds. These methods are highly specific and can distinguish between different types of amphetamines and their metabolites.

What do the results mean?

A 'positive' result means amphetamines were detected in your urine at or above the 200 ng/mL cutoff level. A 'negative' result means no amphetamines were detected above the threshold. It's important to note that different laboratories may have slightly different reference ranges, and certain medications or substances may potentially cause false positive results.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings2

Frequently asked questions

How long do amphetamines stay detectable in urine?
Amphetamines can typically be detected in urine for 1-3 days after use, depending on factors such as dosage, frequency of use, individual metabolism, body mass, and urine pH. Chronic or heavy use may result in longer detection windows.
Can this test detect prescription ADHD medications?
Yes, this test can detect prescription amphetamine medications such as Adderall, Vyvanse, and Dexedrine. If you have a valid prescription, you should inform the testing facility and provide documentation to avoid any confusion with illicit use.
What is the difference between a screening test and a confirmatory test?
A screening test (immunoassay) is a preliminary test that is quick and inexpensive but may have false positives. A confirmatory test (GC-MS or LC-MS/MS) is more sophisticated, accurate, and specific, used to verify positive screening results. This test uses a confirmatory method, meaning it provides highly reliable results.
Can any medications cause a false positive result?
Certain medications such as some antidepressants (bupropion), nasal decongestants (pseudoephedrine), or weight loss medications may potentially cause false positive results on screening tests. However, confirmatory testing methods like this test are highly specific and can distinguish between these substances and actual amphetamines.
  1. 1
    Mayo Clinic Laboratories - Amphetamine Screen, Qualitative, UrineSource
  2. 2
    LabCorp - Amphetamine Screen, UrineSource
  3. 3
    Substance Abuse and Mental Health Services Administration (SAMHSA)Source

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.

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