Like other drugs, including the ordinary ones that people take for common illnesses, the byproducts and metabolites of weed stay in the human body for some time before they are excreted completely by the body.
Many factors and variables affect the detection time of cannabis in urine, including how frequently the cannabis was used, the general level of consumption over a period of time (we call this the consumption trend), and the level of THC present in the strain of cannabis used by the person.
Additionally, a person’s metabolism and level of hydration can also have a bearing in the results of a drug test that detects the presence of cannabis metabolites in human urine.
General statistics show us that cannabis can remain detectable in human hair for as long as ninety calendar days. In urine, the average detection time is three days, but this can be longer if the person is a regular cannabis consumer.
Cannabis can also be detectable in saliva for up to two days. Blood serum testing can yield positive cannabis detection 1.5 days after last use. The impact of the cannabis or what we call the “high” does not affect the detection times in urine, blood serum, or hair, so this should never be used as basis at any time.
It takes some time for the body to completely metabolize and remove byproducts from the body because of the way the body interacts with cannabis when it is inhaled, either through a vaporizing device or through combustion (smoking).
THC is primarily fat-soluble and is easily absorbed by various organs, and quiet deeply, at the tissue and cellular levels. The liver is responsible for metabolizing the THC into two metabolite forms. These metabolites are quickly removed by the body through urinating.
Even if you are an infrequent user, it is still possible for a standard drug test to show that you have used weed one to three days after your last use.
Those who consume cannabis multiple times per week, but not necessarily in a series every 24 hours, can test positive for up to twenty-one days after last use, with a minimum window period of seven days.
The heaviest users tend to test positive for cannabis one calendar month after last use, even if they didn’t touch weed in the last month or so.
You can also test positive for cannabis after more than thirty days, with the current record being ninety days. As for people who consume edibles, there is an average window period of one to five days after you’ve last consumed any kind of food with cannabis infused into it.
There are times when the average window periods do not apply, and this occurs when a person’s unique physiology is able to quickly metabolize and remove THC and its metabolites from the body. It really is a case to case situation, and simply predicting it via window periods may result in inaccurate estimates.