If quitting is not an option, or you don't have enough time for the THC to work its way out of your system naturally, you can attempt to beat a marijuana drug test by doing one or more of the following:
1.Dilute Your Urine
Drinking large quantities of water prior to taking a urine test is one of the most effective methods of beating a marijuana urine test, according to recent testimony before Congress by the US Department of Health and Human Services. Drink a lot of water and urinate several times before the test, then drink a large amount of water right before the test. Fill the cup with urine midstream - in other words, start to urinate, then stop, then fill the cup, then relieve yourself fully into the toilette. Some people suggest taking vitamin B-2 to add color back to the urine. This process may lower the percentage of THC found in the urine by diluting it, but it will not totally eliminate THC metabolites. Again, it depends on how long and heavy you have been smoking.
Caffeine, cranberry juice, and most "quick flush" herbal teas marketed as "detoxifiers" may also effective in helping marijuana smokers beat the test. Consuming these and other diuretic fluids just prior to taking a urine test may temporarily dilute the concentration of drug below the threshold of detection. Substances such as Lasix (ferosemide), which can potentially be hazardous to your health, has been popular for over 20 years by those forced into drug tests on short notice.
Creatinine is a normal byproduct of metabolism that is present in urine at specific levels. Creatinine levels are one of several items considered by urinalysis examiners to identify diluted samples. In response, drug-testers may consume high quantities of Vitamin B, riboflavin, and even Creatine supplements to maintain levels within an acceptable range, even though their urine is highly diluted.
2.Use an Adulterant
An adulterant is any substance that is added to a urine specimen to yield a negative result. They may be ingested or added directly to the urine sample. However, common adulterants like bleach, Visine, or glutaraldehyde, as well as many chemical oxidants such as nitrates are screened by the drug testing industry and are readily identifiable.
Several commercial products are used as urine test adulterants, but none are 100% effective. And all of them can be detected by the laboratory. Many brand-name adulterants consist of potassium nitrate, which many labs treat as a positive test for illegal drugs.
There are various substances that are supposedly capable of flushing the body of traces of marijuana. Some of them may be effective if used over an extended period of time, but none of them are proven to work in the short term. Over an extended period of time, the marijuana will leave your system naturally. However, that being said, there are people who swear by these products, both natural and artificial, so if you need to, take your chances and hope for the best.
Zinc sulfate is believed to bond with THC metabolites, rendering the molecules too large to filter through the kidneys. These metabolites are then redirected to the feces, where the majority of THC metabolites are eliminated anyway. This has yielded only mixed results at best.
Papaine, an enzyme found in the papaya fruit, was reported in The Journal of Forensic Toxicology to reduce the presence of marijuana metabolites and is currently undetected by standard laboratory procedures.
While scientific studies have demonstrated that iodine may be effective at eliminating some marijuana metabolites.