It is a ridiculous thing, and fit for a satire to persons of judgment, to see what shifts these formalists have, and what prospectives to make superficies to seem body, that hath depth and bulk. I speak of the north shore of Tahoe, where one can count the scales on a trout at a depth of a hundred and eighty feet.
Marijuana in the Body. Every time someone smokes a marijuana cigarette or ingests marijuana in some other form, THC (delta-9-tetrahydrocannabinol) and other chemicals enter the user's body. The chemicals make their way through the bloodstream to the brain and then to the rest of the body.
If the user smoked only occasionally, perhaps once a week or every ten days, the metabolites can be detected for up to 10 days. In regular users, THC remains in the blood for as long as 90 days. Heavy users, on the other hand, can have THC trace in their blood for as long as six months.