Rapid Drug Detection :: Urine Drug Tests :: Single Test Card

About Marijuana

THC (∆9--tetrahydrocannabinol) is the primary active ingredient in cannabinoids (marijuana). When smoked or orally administered, it produces euphoric effects. Users have impaired short term memory and slowed learning. They may also experience transient episodes of confusion and anxiety. Long term relatively heavy use may be associated with behavioral disorders.

The peak effect of smoking marijuana occurs in 20-30 minutes and the duration is 90-120 minutes after one cigarette. Elevated levels of urinary metabolites are found within hours of exposure and remain detectable for 3-10 days after smoking. The main metabolite excreted in the urine is 11-nor-∆9-tetrahydrocannabinol-9-carboxylic acid (∆9-THC-COOH. This is the suggested screening cut-off for positive specimens set by the Substance Abuse and Mental Health Services Administration (SAMHSA, USA).

Technical Specificity

The following table lists compounds and their respective concentrations in urine that
yield a positive result in the THC One Step Marijuana Test Strip at 5 minutes.

Compound

Concentration (ng/mL)

Cannabinol

20,000

11-nor-∆8 - THC-9 COOH

11-nor-∆9 -THC-9 COOH

∆8 -THC

15,000

∆9 –THC

15,000

This test card provides only a preliminary analytical test result. A more specific alternate chemical method must be used in order to obtain a confirmed analytical result. Gas chromatography/mass spectrometry (GC/MS) is the preferred confirmatory method. Clinical consideration and professional judgment should be applied to any drug of abuse test result, particularly when preliminary positive results are used. For more information, click here.

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