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2. Cannabis drug testing - Wikipedia

   en.wikipedia.org/wiki/Cannabis_drug_testing

   Most cannabis drug tests yield a positive result when the concentration of THC-COOH in urine exceeds 50 ng/mL. [10] Urine testing is an immunoassay based test on the principle of competitive binding. Drugs which may be present in the urine specimen compete against their respective drug conjugate for binding sites on their specific antibody.

3. Duquenois–Levine reagent - Wikipedia

   en.wikipedia.org/wiki/Duquenois–Levine_reagent

   The Duquenois reagent is used in the Rapid Modified Duquenois–Levine test (also known as the simple Rapid Duquenois Test), which is an established screening test for the presence of cannabis. The test was initially developed in the 1930s by the French medical biochemist Pierre Duquénois (1904–1986) and was adopted in the 1950s by the ...

4. Drug test - Wikipedia

   en.wikipedia.org/wiki/Drug_test

   A 2014 collaborative US study of 359 adults with moderate-risk drug use found, that a large number of participants, who reported drug use in the last 3 months, had negative hair tests. The tests were done using an immunoassay followed by a confirmatory GC-MS. For marijuana, only about half of self-disclosed users had a positive hair test.

5. State-run medical marijuana test lab set to open in ... - AOL

   www.aol.com/state-run-medical-marijuana-test...

   The Oklahoma Legislature appropriated a total of $4.9 million for the current fiscal year for the laboratory.

6. Missouri will begin testing marijuana products at state-run ...

   www.aol.com/missouri-begin-testing-marijuana...

   The lab, expected to be fully operational in 2025, will verify potency as well as testing for contaminants like pesticides, heavy metals and mold. Missouri will begin testing marijuana products at ...

7. Cannabix: Developing A Solution For Outdated Marijuana Testing

   www.aol.com/news/cannabix-developing-solution...

   As we all know, the evolving legalization of medical and recreational cannabis in the United States and Canada is taking us into uncharted territory. As more laws allow the use of this drug, it is ...