The most common form of drug test is the urine test, likely due to its inexpensiveness. Urine testing detects past drug use, not real-time. Urine tests are highly sensitive to marijuana, which stays in the system longer. Opiates or cocaine, on the other hand, flush from the system within 2-3 days, and are rarely detected. Low tolerance for marijuana, and high tolerance for other drugs– plus the fact that urine tests often do not register alcohol use–make urine testing a flawed technology.

Whereas urine tests typically detect past usage, blood tests can be used to gauge real-time impairment. Therefore, blood tests are ideal for roadside or workplace accidents and sobriety checks. Though blood sampling is considered the most accurate method of testing, it’s also the most expensive, and rarely used.

Less common but extremely accurate, hair tests can be used to test most major drugs via a hair sample. Drugs are detectable as long as the hair isn’t cut, growing out just as hair dye does. Hair tests are favored because they can detect drug use within a window of about a week and going back for several months or more.

Saliva testing is a form of drug test that has recently become more common. This test costs less than blood tests, but is more expensive than traditional urine tests. Saliva tests are most reliable for detection of methamphetamine and opiates, but not as helpful for identifying THC or cannabinoids. Saliva tests can detect recent usage and are easy to administer, yet require lab processing to ensure accuracy.

When it comes to passing a urine test, time is your best bet as some substances (like THC) can stay in the system for at least a month. Luckily, as urine tests are the most common form of testing, there are many options available for those looking to pass. Additives: Chemical solutions, available from Clear Test, can be used to doctor a urine sample and control the results.Additives Detox Drinks: Specially-formulated drinks which hold all toxins in the body for up to five hours, allowing the consumer a window for passing a urine test.Detox Drinks Synthetic Urine: Many companies manufacture urine which can be hidden for use during a test, in place of real urine.Synthetic Urine

Luckily, drugs are removed from the blood stream in a short period of time. If you’re able to refrain from using drugs for about 48 hours before the test, you should be able to pass with flying colors. Unlike other forms of drug testing, it’s hard to game the system during a blood test because they are very accurate and can identify herbs or chemicals used to potentially alter your results.

Beyond outright abstaining from using drugs, follicle shampoos are the best way to beat a hair test. Most products cannot be detected by the lab administering the test. Follicle shampoos can last up to eight hours, but recently revised testing standards may affect your results—so do your research before making an investment.follicle shampoos

Saliva tests only register recent drug use (within two to three days). To avoid unwanted results on your saliva drug test, look for effervescent tablets or mouthwash products that typically work for at least two hours. There are also chewing gum products available, such as Oral Clear from ClearTest, that will do the trick.Oral Clear

Since 1998, ClearTest has provided drug testing products to beat any test. We are dedicated to helping people protect both their jobs and their right to privacy. ClearTest carries many products to help you pass, from at-home tests to synthetic urine and detox drinks. For more info, visit our website at or call