How quick can marijuana be out of your system.

Dear Ask The Doctor: How quick can marijuana stay in your system? We have had a drug urine test given my a doctor five days after that was negative.

Dear Dalton: The active ingredient in marijuana, THC, is stored in fat tissues for long periods (weeks to months), and slowly released for longer periods. The time taken for it to clear from the system varies with individuals, and depends on amount and frequency of use, metabolic rate, body mass, age, overall health, drug tolerance, and urine pH of each individual. It may take up to 30 days to clear from your system, perhaps more depending on the various factors mentioned above. The surest way to clean your system is with time, but you may try to speed up the process by increasing fluid intake to flush it out of the system, exercise to increase your metabolism rate and burn fat so that the stored THC may be released faster and can be flushed out of the body.