Article by Sera Jane Ghaly, Herb
The amount of time that weed stays in your system depends on the user and how frequently they smoke.As you continue to consume cannabis, THC accumulates in the body. The more you consume, the longer it will take to clear out. How quickly you metabolize THC as an individual will also affect how long the chemical stays in your system. There are other factors involved, too, such as how you are being tested. Given these variables, here is how long cannabis stays in your system:
THC in Urine
The most common way to test for THC, the primary psychoactive in cannabis, is via urine testing. Urine testing is the cheapest method and has a long detection period. Urine and other tests do not test for THC itself, but rather for a THC metabolite called THC-COOH. The presence of this metabolite means that the body has processed the chemical.
The length of time will vary depending on how often you consume the herb. THC is stored in fat, and therefore accumulates in the body over time. The more you smoke, vape, or eat the herb, the longer it will be detectable in urine.
In general, here’s how long cannabis can be found in your system:
- Single use: up to 8 days
- Frequent use: up to 15 days
- Regular use: up to 30 days
- Heavy use: up to 45-77 days
As a guide, if you´re a regular consumer, chances are THC will remain in your urine for up to a month after stopping. This is also the most likely way you’ll be tested for weed in your system.
Hoping to pass a urine test? Read more below.
THC in Saliva
THC lasts the shortest time in the saliva. This is the method most often used by road police in checking for drugged drivers. THC metabolites will show up in your saliva about 1 hour after smoking and can remain positive in saliva for up to 24 hours after a single smoking session. In regular consumers, this number can reach up to 72 hours.
Since THC accumulates in your system, most heavy consumers are recommended to wait for one week before taking a saliva test. For quick reference, here’s a cheat sheet:
- Single use: up to 24 hours
- Frequent use: up to 72 hours
- Chronic, heavy use: up to one week