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How long after using cannabis can delta-9-tetrahydrocannabinol (THC) be detected?

April 26, 2017cannabis detected THC

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How long after using cannabis can delta-9-tetrahydrocannabinol (THC) be detected?

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Roadside drug testing technology will detect recent usage of cannabis by detecting delta-9-tetrahydrocannabinol (THC), the active ingredient in cannabis. Delta-9-tetrahydrocannabinol (THC) will be able to be detected for several hours after use of cannabis, though the exact time will vary, for example depending on the amount and potency of the cannabis used.