Marijuana Detection

Here are some other good resources I have found in addition to that NORML article which seem to corroborate the findings:

AskTheExpert

http://www.labcorpsolutions.com/imag...Flyer_3166.pdf (this one is a pdf file, you'll need adobe to read it)

Erowid Experience Vaults: Cannabis Urine Testing - THC Detection Times in Occasional Smoker - 37341

Erowid Cannabis Vault : Drug Tests (isn't erowid great?)

I think that generally there is a lot of misinformation out there when it comes to the question of "how long does it stay in your system." Most people come across some hearsay and treat it like fact when in reality there have been very few scientific studies done to test the validity of any argument.

Drink 200ml of vinegar and you'll be alright. Cranberry juice is also very good for flushing your system.

But as most people know - if you are only an occasional smoker it only stays in your system for a week or two while more frequent smokers (like me :D) don't get it flushed out for maybe a month or two, maybe three!

Here is a short article I've edited. The information comes directly from a manufacturer of drug testing supplies, the info was meant to help those administering the test. One issue that gives such a wide variance is the use of two different detection levels.

After smoking or eating cannabis the THC is extensively metabolized before excretion. The presence of tetrahydrocannabinol acid or the cannabinoid metabolite in urine is an indication of marijuana use. The excretion half-life of cannabinoid metabolites in urine, range based on different factors such as: weight, age, BMI, etc.


THC (marijuana / cannabis) is one of the "NIDA 5" - the five drugs tested for in the standard NIDA approved drug test. THC is detectable in Urine for 48-72 hours after single use. Habitual or chronic use can be detected in urine for up to 10 weeks depending on quantity, duration, and frequency of use.

THC is rapidly absorbed by inhalation and the gastrointestinal tract. It is almost completely metabolized. The predominant metabolite is 9-carboxy-11-nor-delta-9-THC, which found in the plasma, feces, and urine along with other compounds. Very low concentrations of THC may be detected in urine during the initial several hours, but tetrahydrocannabinol persists in urine at a detectable concentration for many days after smoking.

The standard THC test is a one step rapid, qualitative immunoassay, a biochemical test that measures the level of a substance in a biological liquid, typically serum or urine, using the reaction of an antibody or antibodies to its antigen. The assay takes advantage of the specific binding of an antibody to its antigen for the detection of tetrahydrocannabinol compounds (11-nor-THC-9-Carboxylic Acid) in urine. The cutoff concentration for a positive result in an immunoassay test is 50 ng/ml as recommended by the Substance Abuse and Mental Health Services Administration (SAMHSA) and NIDA. The cutoff for GC-MS and DOT is 15 ng/ml.


In other words if you are a chronic smoker, do not use the experiences of a casual user to gauge you're detectability time. A chronic chronic user can count on up to 10 weeks. Whereas, someone who rarely smokes could be clear in a fraction of the time.

Great thread / info....Thanks :thumbsup: :stoned:

Have a quick question, what is the difference between the urine dip test, and the blood test that you get at the hospital, or even the urine test they do at hospitals. Anyone with real info on this would be great. Thanks

HI.. I have a quick question. I took a hair drug test yesterday, and I'm freaking out because I took 2 tokes 86 days ago and everything that I read says it sticks to your fat cellls. Well, I'm 5'5 and 220 (I know...) Will I fail? Please help!!!!

This is my first time on my new favorite web site. On 07/30/07 I stopped smoking on 08/03/07 I passed my test.A lot of my friends said its impossible without being caught.I found that water loading and my new (actually,very tasty) drink.Herbal Clean you can find it at GNC.The only thing is you have to do exactly what the directions tell you.This means no cigarettes,no caffeine,no fatty foods at least 2hrs. before test. I'm 5'9"weigh 200lbs.medium smoker if I can pass anybody can.

I have recieved OSHA and DOT training about urine testing due to a job that I had once upon a time. The Department Of Transportation and employers generally incorporates urine testing for pre-emp. and randoms. I'm not an expert, but I've passed alot of test and have gathered the experiences of people that have passed and failed.