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How Long does Marijuana Stay in System for Drug Test.

Marijuana is the most widely consumed narcotic substance in the United States as well as in many other countries. It is commonly known as pot, weed, grass and herb, although the first term is most widely used. It can either be smoked in or orally consumed. In the later case the effects are more potent and last longer although they take their time to make themselves felt as compared to when pot is smoked in.

Marijuana is soluble in fat. Therefore it gets stored inside kidneys, liver and other such vital organs. This has a kind of retention effect – prolonging the duration for which the drug remains in the body system. This drug is then excreted slowly from the body. It can be detected in blood, urine, sweat, saliva and from hair extracts. The retention times are different for different categories of users i.e. depending on how frequently and in what quantity the users consume the drug. Marijuana can be detected in urine for a period of up to 10 days, 45 days and 90 days respectively for occasional users, regular users and chronic users.

In the bloodstream the detection times are lesser than those in urine. This is because kidneys store, process and then excrete elements from the body. The same applies for toxins. This increases their retention times, which is not the case with blood. Occasional and regular use of marijuana can be detected in blood respectively for a period of 12 – 24 hours and 2 – 7 days. In saliva pot can be detected for a period of 24 hours (based on unconfirmed reports).

Hair Drug Tests by their very nature can trace drug consumption history for greater periods of time. Drug residues get collected in the second concentric layer of all hairs on a drug user’s body. Drug tests extract a hair from any part of the body and dissolve the outer layer of the hair. The inner layer is then examined for the presence of drugs. Standard drug tests can go back 90 days while advanced versions of this test can detect marijuana consumption in the last 3 years.