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Cannabis drug testing describes various drug test methodologies for the use of cannabis in medicine, sport, and law. Cannabis use is highly detectable and can be detected by urinalysis , hair analysis , as well as saliva tests for days or weeks.
In 2015, the first government standards for testing were proposed in Colorado's legislature, when potency and microbial testing became mandatory in the state. [11] [12] [13] Colorado cannabis testing laboratories, such as AgriScience Labs, are regulated by the Colorado Department of Revenue's Marijuana Enforcement Division and the Colorado Department of Public Health and Environment. [14]
[40] [41] 49 CFR Part 199 and 49 CFR Part 40 set maximum urine concentration levels of THC-A as the threshold for impairment for regulated transportation occupations. [41] As of January 1, 2018, the THC-A testing cutoffs were 50 ng/mL for an initial immunoassay test and 15 ng/mL for a confirmatory gas chromatography–mass spectrometry test. [42]
In the course of testing for potency, one batch of flower was found to contain three times the allowed level of pyrethrins. Cannabis regulators were alerted but issued no recall.
But Brubacher said the presence of THC, even at levels that exceed 2 nanograms per milliliter, does not necessarily mean the drivers were impaired and doesn’t mean marijuana use was the cause of ...
Other concerns include difficulties for drug testing due to novel metabolites, or high potency/binding affinity of isomers for cannabinoid receptors showing potential for abuse (i.e., THCP, which has 33× the binding affinity of Δ 9-THC) [70] [71] From 2021 to 2023, the Δ 8-THC market generated US$2 billion in revenue. [72]
Studies have found that the potency of illicit cannabis has greatly increased since the 1970s, with THC levels rising and CBD levels dropping. [146] [147] [148] It is unclear, however, whether the increase in THC content has caused people to consume more THC or if users adjust based on the potency of the cannabis. It is likely that the higher ...
Cannabis concentrate, also called marijuana concentrate, marijuana extract, or cannabis extract, is a tetrahydrocannabinol (THC) and/or cannabidiol (CBD) concentrated mass. Cannabis concentrates contain high THC levels that range from 40% to over 90%, [ 1 ] [ 2 ] stronger in THC content than high-grade marijuana, which normally measures around ...