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Cannabinoid Screening (Urinary)

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

This test checks for the presence of cannabinoids, the active compounds found in marijuana, in your urine. It helps determine if you’ve recently used cannabis.

Quick summary

["This test screens for recent marijuana use and supports understanding substance exposure."]

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

Key facts at a glance

LOINC
50406-8
Short code
Cannabinoids Mec Ql Cfm
Synonyms
Cannabinoids Mec Ql Cfm
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
confirm
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why This Test Is Done

Your healthcare provider may order this test if you’ve been suspected of using marijuana, if you’re part of a workplace drug screening program, or if you’re in a treatment program requiring monitoring. It can also be used in legal or employment-related contexts where substance use is a concern.

What to Expect Before the Test

No special preparation is needed. You’ll provide a urine sample in a private area, typically collected in a sterile container. If this is part of a workplace or legal screening, follow any specific instructions provided by the facility.

What the Test Results Mean

If cannabinoids are detected, it means you’ve recently used marijuana. The results may indicate the timing of use (e.g., recent vs. long-term exposure). However, results can vary based on how often you use cannabis and your metabolism.

Common Misconceptions About Cannabinoid Testing

Cannabinoid tests do not distinguish between different types of cannabis or measure the exact amount of THC (the psychoactive compound). They only confirm the presence of cannabinoids in your system, which can last for days to weeks depending on usage frequency.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Cannabinoid Urine Test

Frequently asked questions

What does a positive cannabinoid test indicate?
A positive cannabinoid test confirms recent marijuana use, which may be relevant for medical, legal, or employment reasons. It does not provide details about the amount or type of cannabis used.
How long do cannabinoids stay in urine?
Cannabinoids can remain in urine for several days to weeks, depending on factors like frequency of use, metabolism, and hydration. This is why tests are often used for recent use monitoring.
Can false positives occur?
False positives are rare but possible, especially if you’ve consumed other products containing cannabinoids (e.g., certain foods or supplements). If you’re concerned about accuracy, discuss this with your healthcare provider.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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