What is the typical detection time for cannabis after use of a single joint?

The typical detection time for cannabis after using a single joint is often cited as around 2 days in situations involving urine drug testing for occasional users. This is due to the pharmacokinetics of THC (tetrahydrocannabinol), the primary psychoactive component in cannabis. After inhalation, THC is rapidly absorbed into the bloodstream, but it is also quickly metabolized, yielding various metabolites that can remain detectable in the body for a variable amount of time.

For someone who uses cannabis infrequently or in small amounts, as with a single joint, the metabolites will generally clear from the system more quickly than in regular or heavy users, who may retain detectable levels for significantly longer due to cumulative storage in fat tissues. A detection window of around 2 days aligns with common findings in research studies regarding occasional use, thus making it the appropriate choice in this context.

While other options may account for heavier, chronic use or differences in metabolism, they do not reflect the average detection time expected after a single usage event among occasional users.