Cannabis is the most frequently abused illicit mind-altering drug in the society. Cannabis Sativa which is also known as hemp is habitually used to make cord and fibers. The plants are extremely tall with thin, light green leaves and a sweet fruity aroma. The main active element in Cannabis is is THC. Cannabis is accessible in two main types: marijuana, the dried leaves and female blossom heads; and hashish, dense blocks of resin removed from the plant.

Cannabis does have short term side effects. Effects of cannabis start within a few minutes after addiction and will last for several hours if high doses are taken. Cannabis will reside in the body for about 4 days due to the half life of the drug. When cannabis is smoked or injected they are triggered to release the active ingredient THC in to the blood stream. Quarter part of the THC will reside in body for 8 days. Complete removal of the drug from the body requires at least 5 weeks. If the individual wanted to pass the drug test he has to stop abusing this drug before a month. Only then, it will be eradicated from the body.

The warning indications for long term usage of the cannabis are bloodshot eyes, giggling, distracted, introverted, short attention span, verbal tangents, loss of short term memory, restlessness, etc. Intoxication of cannabis will lead to difficulty in walking, memory difficulty, etc.

The drug test can be conducted to check for the addiction. The cut-off level for cannabis is 50ng/ml. As the body retains this drug for longer time it is easy to predict even after a week of abuse.

Cannabis drug test, testing for cannabinoid, test for THC, standard drug test, urinalysis drug screening are frequently carried tests for cannabis.