The answer to this question will depend on a number of factors, including the method of consumption and the user’s metabolism. The half-life of THC varies and may take several days to drop from the body, but the general consensus is that edibles will stay in your system for five days or less after they’ve been eaten.
Do edibles show up in drug tests their long-lasting effects, the psychoactive effect of edibles is often a bit weaker than inhaled marijuana and can be felt up to 30 minutes after ingestion (Grotenhermen, 2003; Huestis, Sampson, Holicky, Henningfield, & Cone, 1992). The high from an edible can also be longer-lasting, with peaks lasting 2 to 4 hours after the first edible was consumed (Huestis, 2007).
The average time for THC to leave the body is 5 days, unless you’re a heavy user. This is because THC metabolites from edibles take longer to be processed in the body than inhaled weed, so they will remain present in your system for longer.