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Hair testing is an increasingly common method of assessment in substance misuse, particularly in legal proceedings, or in any situation where a subject may have decided not to tell the entire truth about his or her substance-using history. Post-mortem hair sample analysis can also be performed, to allow for determination of long-term drug use ...
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 tempering. 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.
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.
Long Detection Window: Unlike traditional drug testing methods, hair analysis can detect ketamine use for up to 90 days, providing a comprehensive overview of an individual’s drug use history. Non-Invasive and Convenient : The hair collection process is simple and noninvasive and can be performed without the need for specialized facilities ...
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] Hair samples are analyzed using enzyme-linked immunosorbent assay (ELISA).
He “defrauded tens of thousands of innocent victims, whose health was put at risk with false allergy and sensitivity testing results,” said a U.S. attorney in New York.
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