False.
The duration of time it takes for marijuana to be eliminated from the body can vary significantly based on factors such as the individual's metabolism, frequency of use, and the potency of the marijuana. While some effects may diminish within a few hours to days, traces of THC can be detected in the body for much longer, especially in chronic users. In terms of drug testing, marijuana can be detectable in urine for days to weeks after use, particularly in regular users.