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  2. Cannabis drug testing - Wikipedia

    en.wikipedia.org/wiki/Cannabis_drug_testing

    Cannabis use is detectable with hair tests and is generally included in the standard hair test. Hair tests generally take the most recent 1.5 inches of growth and use those for testing. That provides a detection period of approximately 90 days. [5] If an individual's hair is shorter than 1.5 inches, this detection period will be shorter.

  3. Hair analysis - Wikipedia

    en.wikipedia.org/wiki/Hair_analysis

    Hair analysis may refer to the chemical analysis of a hair sample, but can also refer to microscopic analysis or comparison. Chemical hair analysis may be considered for retrospective purposes when blood and urine are no longer expected to contain a particular contaminant, typically three months or less.

  4. Marijuana strain types. Experts weigh in on the differences ...

    www.aol.com/news/marijuana-strain-types-experts...

    Stoners and scientists disagree on the answer. Some ask for a new system.

  5. Drug test - Wikipedia

    en.wikipedia.org/wiki/Drug_test

    Hair drug testing is a method that can detect drug use over a much longer period of time than saliva, sweat or urine tests. Hair testing is also more robust with respect to tampering. Thus, hair sampling is preferred by the US military [66] and by many large corporations, which are subject to Drug-Free Workplace Act of 1988.

  6. List of names for cannabis - Wikipedia

    en.wikipedia.org/wiki/List_of_names_for_cannabis

    A 2022 study in PLOS One, drawing data from almost 90,000 samples from six US states, representing the largest quantitative chemical mapping of commercial dispensary-grade cannabis flower samples to date, found that “commercial labels do not consistently align with the observed chemical diversity.” In other words, many strain names do not ...

  7. Hair analysis (alternative medicine) - Wikipedia

    en.wikipedia.org/wiki/Hair_analysis_(alternative...

    In mainstream scientific usage, hair analysis is the chemical analysis of a hair sample. The use of hair analysis in alternative medicine as a method of investigation to assist alternative diagnosis is controversial [1] [2] and its use in this manner has been opposed repeatedly by the AMA because of its unproven status and its potential for healthcare fraud.

  8. Duquenois–Levine reagent - Wikipedia

    en.wikipedia.org/wiki/Duquenois–Levine_reagent

    A 2000 study by the US NIST [6] examined 12 chemical spot tests and concluded that all the tests examined "may indicate a specific drug or class of drugs is in the sample, but the tests are not always specific for a single drug or [class]". The study also noted that "mace, nutmeg and tea reacted with the modified Duquenois–Levine [test]".

  9. Cannabis strain - Wikipedia

    en.wikipedia.org/wiki/Cannabis_strain

    Cannabis strains is a popular name to refer to plant varieties of the monospecific genus Cannabis sativa L.. They are either pure or hybrid varieties of the plant, which encompasses various sub-species C. sativa , C. indica , and C. ruderalis .