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Delta 9 THC is the parent compound. If a saliva sample is tested in a lab, the detection level can be as low as 0.5 ng/mL (up to 72 hours after intake). [24] Per National Institute on Drug Abuse saliva drug testing provides a reasonable alternative to other drug testing methods. [25]
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.
Laboratory Corporation of America Holdings (Labcorp), headquartered in Burlington, North Carolina, provides laboratory services used for diagnosis and healthcare decisions. [1] It operates one of the largest clinical laboratory networks in the world and has operations in over 100 countries; although its operations are primarily in the U.S. [ 1 ]
Hair analysis has the virtue of showing a 'history' of drug use due to hair's slow growth. Urine analysis might detect drugs taken in the past 2–3 days; hair analysis can sometimes detect use as far as 90 days, although certain cosmetic treatments (e.g. dyeing hair) can interfere with this.
Pre-Labcorp Drug Development companies (1968–1996) In 1968, Environmental Sciences Corporation was established in Seattle, Washington, manufacturing equipment related to laboratory animals. In 1972, it purchased and took the name of Hazleton Laboratories, a contract laboratory that conducted toxicology testing.
In June 2021, the company changed its name to Labcorp Drug Development. [55] In February 2023, the company was renamed Fortrea Holdings. [56] In July 2023, Labcorp completed the corporate spin-off of the company. [57] In June 2024, the company sold its Endpoint Clinical and Fortrea Patient Access businesses to Arsenal Capital Partners. [58]
Brendan Fraser grew his hair long to play George in George of the Jungle in 1995, but kept the iconic look for a few years after. Today, the actor opts for a short look instead.
3 Behavioral Testing. ... 4 "Order of magnitude" unclear in section on hair tests for alcohol. 1 comment. 5 Should drug testing be legalized in schools? 1 comment.