![]() ![]() employers to lessen the impact from drug abuse, safety concerns, and low productivity in the workplace. However, workplace drug testing is now common in general for many U.S. Safety-related drug testing - if an employee's job could lead to safety issues if judgement or physical ability were impaired.ĭrug testing is often done when applying for employment, especially for positions that may involve federal transportation, airline industries and pilots, bus drivers, trucker drivers, railways, hospitals, and other workplaces where public safety is of the utmost importance.Post-accident drug testing - a vehicular or on-the-job accident which may have involved human error and resulted in casualties or property damage.College or professional athletic drug testing.Pre-employment drug screening test or random, work-related drug testing to identify on-the-job drug abuse.There are many circumstances that may require drug testing: Last updated on April 17, 2022.ĭrug testing is the evaluation of urine, blood or another type of biological sample to determine if the subject has been using the drug or drugs in question. The two metabolites also have the same molecular weight and very similar chemical properties, meaning delta-8-THCA can interfere with detection of delta-9-THCA, leading to a false-negative on definitive testing.Ĭlinicians should keep these important caveats in mind when using the results of a test for delta-9-THC in counseling their patients.Medically reviewed by Leigh Ann Anderson, PharmD. Thus, a presumptive test for a person who has used a delta-8 product (which may be legal in the state where he or she resides) may give a false-positive for delta-9-THC. For presumptive testing, which uses an immunoassay, the structural similarity between the two metabolites leads to high antibody cross-reactivity. ![]() Those similarities can lead to challenges in testing, Dr Kain said. That similarity carries over into their major urinary metabolites, delta-8-THCA and delta-9-THCA, which also differ in only one bond. The similarity in the names of delta-8-THC and delta-9-THC is an indication of how close they are structurally, differing only in the position of one double bond in one ring within the THC molecule. Absent such clarification, many states that have not legalized recreational marijuana have declared delta-8 to be illegal. According to the most recent rule from the Drug Enforcement Administration, “All synthetically derived tetrahydrocannabinols remain schedule I controlled substances,” 1 but the rule did not clarify whether such compounds converted from CBD, a legal hemp product, are included. ![]() The legality of delta-8 is in something of a gray zone. Hemp does contain large amounts of cannabidiol (CBD), which is mostly legal and widely used for its purported health benefits.ĬBD can be chemically converted into delta-8, Dr Kain said, “and in recent years, it has grown in production and selling as medicinal or recreational cannabis products, resulting in the proliferation of delta-8-THC vape liquids, tinctures, and edibles.” Like marijuana, hemp is a variety of the plant Cannabis sativa, but is bred to contain less than 0.3% delta-9, too little for the “high” of marijuana. The rise in the sale of delta-8 products is tied to the 2018 federal Farm Bill, which made it legal to grow hemp. Delta-8 is less potent than delta-9, but interacts with the same brain receptors and can produce a “high.” Unfortunately, delta-8 interferes with testing for delta-9 in both presumptive and definitive urine drug tests, according to Quest Diagnostics Medical Science Liaison, Jack Kain, PharmD. “Delta-8” is a chemical cousin of delta-9-THC, the main cannabinoid responsible for the euphoria of marijuana. In states where recreational cannabis products are still illegal, authorities are seeing a large increase in sales of products containing delta-8-THC. ![]()
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