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  2. Duquenois–Levine reagent - Wikipedia

    en.wikipedia.org/wiki/Duquenois–Levine_reagent

    The Duquenois reagent is used in the Rapid Modified Duquenois–Levine test (also known as the simple Rapid Duquenois Test), which is an established screening test for the presence of cannabis. The test was initially developed in the 1930s by the French medical biochemist Pierre Duquénois (1904–1986) and was adopted in the 1950s by the ...

  3. Cannabis drug testing - Wikipedia

    en.wikipedia.org/wiki/Cannabis_drug_testing

    To administer the test, a user simply has to mix the chemicals with a particle of the suspected substance; if the chemicals turn purple, this indicates the possibility of marijuana. But the color variations can be subtle, and readings can vary by examiner. It was adopted in the 1950s by the United Nations as the preferred test for cannabis ...

  4. Home test kits can detect marijuana in cannabis products ...

    www.aol.com/news/home-test-kits-detect-marijuana...

    Does that product contain an illegal level of THC? This will help you find out.

  5. Marquis reagent - Wikipedia

    en.wikipedia.org/wiki/Marquis_reagent

    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).

  6. Amazon backs legalizing marijuana, drops testing - AOL

    www.aol.com/news/amazon-backs-legalizing...

    Amazon on Tuesday announced its support for legalizing marijuana in the U.S and said it would drop its weed-testing requirements for some employees.In a blog post, the head of Amazon’s consumer ...

  7. Cannabis product testing - Wikipedia

    en.wikipedia.org/wiki/Cannabis_product_testing

    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]

  8. NJ legal weed: Find your nearest dispensary for recreational, medical marijuana If drivers test positive to 3 nanograms or more of THC — the cannabis component that gets people high — they ...

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