Pot, weed and grass are other names for Marijuana, the most popular drug. It represents dry, green or brown leaves and flowers of Cannabis Sativa plant and in slang is well-known as herb, hash, grass or ganja. It contains more than 400 chemicals and also delta-9-tetrahydrocannabinol, or THC. This ingredient has psychoactive and mind suppressing nature and its percentage in the drug actually defines the strength of it.
A common dose of pot contains 3% of THC but it can be different. Initial effect lasts for about 2 hours and then is gone, but this does not mean that THC leaves the system as well. Therefore when we speak about pot staying in the organism we actually mean THC.

THC can be indicated by doing drug tests of saliva, hair, or urine, and blood. And in some cases it is really surprising how long THC can stay in your standard saliva, hair, or urine.

Pot leaves saliva quite fast and therefore it is more complicated to detect it there. Home saliva drug test is able to identify pot in saliva after an hour of use. But if a test is undergone after 12 hours it can be inadequate as this is the time when the drug leaves saliva.

Urine test is a bit different as its result depends on how often a person smokes. It generally can be detected after two or five hours after drug was smoked. The average duration of pot in the urine is between a week and 30 days, but in some cases it can be even 45 days.

But even if your saliva and urine are clean from THC this does not meant that it left the system completely. It stays in hair follicles, and quite for a long time. The drug appears in a bloodstream after you smoke and hence reaches hair; so does THC. After a week, when hair has grown enough to be cut, a test can be carried out. Hair require more time than anything else to get rid of the drug – after 90 days it still can be present there. What concerns body hair, they grow slower, and therefore a period of drug detection in them can be about a year. However, such a test not always can be relied on and it is not so accurate if compared with the urine test.

The most influential factor for the duration of stay of pot in the system is the frequency of smoking. When we smoke, THC is absorbed by fat cells. After a period of time, however, our organism scavenges itself from pot and the bloodstream becomes clean again. With the frequent smokers it is different: THC stays in your fat in larger amounts than the bloodstream can accept ant therefore the drug preserves in the system for a far longer period of time.

The conclusion is the following: each part of the system tends to react differently to pot and keeps it in for different periods of time. Therefore, if the test is carried out with a teenager or a grown-up and they are, probably, using marijuana regularly, it should be taken into consideration.