A marijuana drug test will test for THC and its metabolites, 11-hydroxy-THC (11-OH-THC) and 11-nor-9-carboxy-THC (THC-COOH). When taking drug tests, the ability to pass or fail depends on numerous factors, including what type of drug test is being administered, food intake before initial consumption, water intake after consumption, fat content in the consumer, type and potency of the product consumed, consumption method, and a few that can’t be properly measured, guessed or even calculated, such as personal bioavailability and enzyme breakdown efficiency, among others. Due to these factors, it is impossible to determine with certainty whether someone will pass or fail a drug test after consuming cannabis without actually taking a drug test.
As a general rule of thumb, expect to fail drug tests for the next 60 days after consuming marijuana, whether you’ve consumed it before or not. On average, frequent consumers can fail hair follicle tests for up to 90 days, urine tests for up to 77 days, and blood and saliva tests for up to 7 days. Drinking lots of water and working out after consuming cannabis can help reduce THC levels in the consumer’s body, but not enough to significantly affect whether a test will be positive or negative. Logically, you should have a slightly increased chance of passing if it’s your first time using cannabis, as your body was just introduced to a new chemical and had to take some time to figure out what to do with it. For some people, this can take much longer than usual, which is why some consumers’ first times don’t produce any effects; their body filtered out all the THC before it was properly metabolized. While this can be the case for some individuals, it isn’t for everyone. Some chronic smokers who’ve consumed every day for years on end have passed after just 30 days of quitting, while others have failed up to 80 days after their first time taking a few puffs from a joint when taking hair and urine tests. There’s just not a consistent way to gauge it, so you should plan for the worst if passing a drug test is a genuine concern for you.
THC concentration moves to numerous places throughout the body after consuming cannabis. It can be detected in the blood, urine, feces, brain, high perfusion tissues, low perfusion tissues and fat. 48 hours after consuming cannabis, most of the THC has been moved away from the blood, brain and high perfusion tissues, but are increasing in concentration in low perfusion tissues and fat. Around 50 – 90% of THC and other phytocannabinoids are excreted from your body in the first 4 or 5 days. 80% of this excretion is via feces, with only trace amounts in the urine. Urinalysis is still used for testing simply because laboratory personnel don’t like handling feces. Phytocannabinoid content in fat continues to heighten, and only begins to subside slowly after roughly 10 days, but can remain in trace amounts for up to 90 days, notably in hair follicles. Though not detectable by standard drug testing, technically THC can remain in someone’s body for thousands of years if the body is properly preserved, as seen when a 4,000 year old Egyptian mummy had trace amounts of THC from hashish detected in its hairs, bones and soft tissues.
Home remedies and detoxing kits do not work, and are only made to make money from desperate people and nothing more. Under no circumstances will drinking niacin, Certo, bleach, vinegar, Goldenseal or cranberry juice, or applying soap or dishwasher detergent topically help you to pass a drug test. These remedies are a waste of money and can be dangerous to one’s health.