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A big challenge to testing employees for marijuana was the lack of a test that could detect recent usage. ... There are more than 25 Breathalyzer devices in the state of Michigan and about 120 ...
A device that can detect THC, the chemical in cannabis responsible for its psychoactive effects could work as a Breathalyzer-type tool to test for marijuana.
Most cannabis drug tests yield a positive result when the concentration of THC-COOH in urine exceeds 50 ng/mL. [10] Urine testing is an immunoassay based test on the principle of competitive binding. Drugs which may be present in the urine specimen compete against their respective drug conjugate for binding sites on their specific antibody.
A drug test (also often toxicology screen or tox screen) is a technical analysis of a biological specimen, for example urine, hair, blood, breath, sweat, or oral fluid/saliva—to determine the presence or absence of specified parent drugs or their metabolites.
The above photo shows the positive results of the number 2 Marquis reagent presumptive drug test when used with a sample of opium. It is the primary presumptive test used in Ecstasy reagent testing kits. It can also be used to test for such substances as opiates (e.g. codeine, heroin), and phenethylamines (e.g. 2C-B, mescaline).
First there were alcohol breathalyzers but a marijuana breathalyzer could be coming to law enforcement near you.
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