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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.
Head hair normally growth at the rate of 0.5 inches per month. [67] Thus, the most common hair sample length of 1.5" from the scalp would detect drug use within the last 90-100 days. 80-120 strands of hair are sufficient for the test. [68] In the absence of hair on the head, body hair can be used as an acceptable substitute.
Chemical hair analysis is used for the detection of many therapeutic drugs and recreational drugs, including cocaine, heroin, benzodiazepines and amphetamines. [3] [4] Hair analysis is less invasive than a blood test, if not quite as universally applicable. In this context, it has been reliably used to determine compliance with therapeutic drug ...
The darker and coarser the hair the more drug that will be found in the hair. If two people consumed the same amount of drugs, the person with the darker and coarser hair will have more drug in their hair than the lighter haired person when tested. This raises issues of possible racial bias in substance tests with hair samples. [13]
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Some letters also threatened prosecution of state employees, or even the seizure of state administrative buildings (such as those used for the processing of medical cannabis licenses). [50] In response to outcry and requests for clarification from numerous officials, a new memo was issued by Deputy Attorney General James M. Cole in June 2011. [50]
The new year brings a host of new laws across the nation, including one requirement to be imposed later in 2020 that will affect millions nationwide.
People would be allowed to braid hair without a license under a bipartisan bill the Wisconsin Senate was set to... View Article The post Wisconsin assembly to vote on ending licenses for braiding ...