Skip to main content
Your session has expired. Reloading...
Drug Screening

THC/Cannabis Drug Test

A cannabinoids/THC urine test is a qualitative screening that detects the presence of THC metabolites in urine. THC (delta-9-tetrahydrocannabinol) is the primary psychoactive compound in cannabis.

Doctor's Assessment Included

Cannabinoids (THC): what this test measures

This test detects the presence of THC-COOH (11-nor-9-carboxy-THC), the primary urinary metabolite of THC. After cannabis use, THC is metabolised in the liver and its metabolites are excreted in urine over an extended period. The test provides a qualitative result indicating whether THC metabolites are present above the assay cut-off level.

THC metabolites are lipophilic and accumulate in fatty tissue, which contributes to the potentially long detection window, particularly with regular use.

Cannabinoids (THC): why this value matters

THC testing is one of the most commonly performed drug screenings and is a standard component of workplace, clinical, and forensic drug testing panels. Detection indicates cannabis exposure within the relevant detection window.

Interpretation should consider frequency of use, as single-use and chronic use produce very different detection windows. Clinical context is important for appropriate assessment of results.

Cannabinoids (THC): when is testing worthwhile?

Testing may be relevant as part of standard workplace drug screening, pre-employment testing, clinical assessments, substance abuse treatment monitoring, or legal and forensic evaluations.

Consult a healthcare professional for guidance on interpretation, particularly given the wide variation in detection windows based on usage patterns.

Cannabinoids (THC): frequently asked questions

How long can THC be detected in urine?

The detection window for THC in urine varies significantly. For occasional users, THC metabolites may be detectable for approximately 3 to 5 days. For regular or heavy users, detection may extend to 30 days or more due to accumulation in fatty tissue.

Can passive cannabis exposure cause a positive result?

Passive exposure to cannabis smoke is unlikely to produce a positive result at standard cut-off levels used in workplace screening. However, prolonged exposure in an enclosed environment may in rare cases lead to detectable levels. Confirmatory testing can provide additional clarity.

What should I expect from a THC urine test?

The test requires a urine sample, which is screened for THC metabolites using immunoassay. Results are qualitative, indicating detection above or below the assay threshold. Confirmatory testing using mass spectrometry may be performed following a positive screening.

Tests with related values

These panels measure values from the same category as this marker.

Medical reviewer

Medical standards

Dr. Naimi oversees the medical standards behind our content and assessments.

Medical policy
CIBG Ministerie van Volksgezondheid,
Welzijn en Sport Official BIG registration BIG 49928676701 Opens in a new tab

Cannabinoids (THC)

€199,-