How long does marijuana thc drugs stay in your system

How long does weed stay in your system & the times for other Drugs to Stay in the Body Drug Testing Information. 

What Do They Test For? Marijuana?

Do they test for cannabis and weed?

What are the Types of Tests Performed?

Unfortunately, even though this is clearly an invasion of your right to privacy – these drug tests can also uncover things like prescription drugs, pregnancies, and other medical issues with potential consequences on our health care coverage. As many of you are aware there is a distinct racial bias in drug testing. Blacks are far more prone to failing a drug test than whites are. So don't let them discriminate against you with these unconstitutional drug tests.

Cannabinoids (marijuana, hash)
Cocaine (cocaine, crack, benzoylecognine)
Amphetamines (amphetamines, methamphetamines, speed)
Opiates (heroin, opium, codeine, morphine)
Phencyclidine (PCP)

Detoxifying Products for removing THC out of your System Purchase Drug Detection Kits Here

How long does weed stay in your system?

Amphetamines (Biphetamine, Black Beauties, Crosses, Dexedrine, Hearts), 4-7 days

Anabolic steroids (Stanzolol, Stanazolol, Nandrolene; Steroids, Roids, Juice),  oral- up to 3 weeks; injected- up to 3-6 months and more

Barbituates (Amytal, Nembutal, Seconal, Phenobarbital; Barbs), 4-6 days

Benzodiazepines (e.g., Ativan, Halcion, Librium, Rohypnol, Valium; Roofies, Tranks, Xanax), 7-10 days

Cocaine (Candy, Coke, Crack, Flake, Rocks, Snow, Whitecoat), (Candy, Coke, Crack, Flake, Rocks, Snow, Whitecoat), 4-7 days

Codeine (e.g., Fiorinal w/codeine, Robitussin A-C, Empirin w/codeine, Tylenol w/codeine, 3-6 days 

GHB (G, Grievous Bodily Harm, Goob, Liquid Ecstasy, Liquid X), 3-4 days

Heroin (Horse, Smack), 7-10 days

Inhalents, just a few hours to 3 days

Ketamine (K, Kit Kat, Special K, Vitamin K), 2-4 days

LSD (Acid, Blotter, Microdot, Yellow sunshine), a few hours or up to 5 days

Marijuana (Bud, Blunt, Grass, Herb, Pot, Reefer, Sinsemilla, Smoke, Weed), 4-7 days (the daily, heavy user can sometimes be detected up to 30+ days)

MDMA (Ecstasy), 3-7 days

Methadone, 3-7 days

Methamphetamines (Crank, Crystal, Desoxyn, Glass, Ice, Speed), 4-8 days

Methaqualone (Ludes, Quaaludes), 10-15 days

Nicotine (Cigarettes, Cigars, Habitrol patch, Nicorette gum, Nicotrol spray, Prostep patch; Smokeless tobacco, Snuff, Spit tobacco), 7-10 days

Opiates (i.e., Opium: China, Dreams, Laudanum, Paregoric; Dover's Powder), 7-10 days

Oxycodone (OxyContin, Percolone, Roxicodone), 7-10 days
PCP (Angel Dust, Boat, Hog, Love Boat), 3-8 days

  Shortest Detectability - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Longest Detectability
Alcohol 12 hrs 6-12 hrs unknown 6-24 hrs (5 days with EtG) n/a
Amphetamine 12 hrs 3 days unknown 1-4 days up to 90 days
Barbiturates unknown unknown unknown 1-21 days unknown
Benzodiazepines unknown unknown unknown 1-42 days unknown
Cannabis (single use) 2-3 days 12-24 hrs unknown 2-3 days up to 90 days
Cannabis (habitual use) 2 weeks 12-24 hrs unknown 15-30 days up to 90 days
Cocaine unknown 1 day unknown 4-5 days up to 90 days
Codeine/Morphine unknown 12-36 hrs unknown 2-4 days up to 90 days
Heroin unknown unknown unknown 2-4 days up to 90 days
Methamphetamine 1-3 days unknown unknown 3-5 days up to 90 days
PCP 1-3 days 3 days unknown 3-7 days up to 90 days


There are five primary types of drug tests: urine, blood, hair, saliva, and sweat. Most common is the urine test which has the benefit of being inexpensive and less intrusive than the blood test but more intrusive than a hair test or saliva test.

Urine Tests
  • Are the least expensive of the test methods (~$7-$50 for home version).
  • Are considered an intrusive method of testing.
  • Can be done at home (for example by parents) though require lab verification for accurate results.
  • Detect use primarily within the past week (longer with regular use).
  • Can be affected by abstaining from use for a period of time before the test.
  • Are often temperature tested to insure sample integrity.
Saliva Tests
  • Are a little more expensive than urine testing, but less than hair test or blood test. (~$15-$75).
  • Are considered a relatively unintrusive method of drug testing compared to a blood test.
  • Are becoming more common.
  • Are easy to administer but require lab processing to ensure accuracy.
  • Detect use primarily within the past few days.
  • Can detect more recent use than other testing methods.
  • Have no nationally accepted standards or cutoff concentrations for detection, making results greatly dependent on the specific product purchased. This could also make results less-reliable and/or acceptable for legal cases.
  • More reliable for detection of Methamphetamine and Opiates, less reliable for THC or Cannabinoids (2004).
Hair Tests
  • Are currently several times more expensive than urine tests (~$100-$150).
  • Are considered the most unintrusive method of drug testing.
  • Detect substance use over a longer period (see detection period or Drug Testing in the Workplace).
  • Do not usually detect use within the past week.
  • Require a sample of hair about the diameter of a pencil and 1.5 inches long. They can not be done with a single hair.
  • Test positive a little more than twice as often as a urine test. In a recent study, out of 1823 paired hair and urine samples, 57 urine samples tested positive for drugs of abuse; while 124 hair samples from the same group tested positive.
  • Are not significantly affected by brief periods of abstinence from drugs.
  • Can sometimes be used to determine when use occured and if it has been discontinued. Drugs, such as opiates (codeine, morphine, heroin) lay down on the hair shaft very tightly and are shown not to migrate along the shaft, thus, if a long segment of hair is available one can draw some "relative" conclusions about when the use occurred. However cocaine, although very easy to detect, is able to migrate along the shaft; making it very difficult to determine when the drug was used and for how long.
  • Claims to be able to reliably differentiate between opiate and poppy seed use.
  • We've heard that many hair tests now check for more than the SAMHSA-5, and include at least Cannabis, Ecstasy/MDMA, Cocaine, Opiates, Methamphetamine, Amphetamine, Phencyclidine (PCP), Benzodiazepines, & Barbiturates (2001).
  • Shampoos and "follicle cleansing" products do not reliably remove drug metabolites from hair.
  • Hair/follicle tests as of 2011 are able to detect use for months (sometimes more than a year) after use.
Blood Tests
  • Are the most expensive method of testing.
  • Are considered the most intrusive method of testing.
  • Are the most accurate method of testing.
  • Are the least common method of testing (most likely due to cost).
Sweat (Patch) Tests
  • Are considered a relatively intrusive method of drug testing because they require the wearing of a patch for an extended period of time.
  • Are still relatively uncommon.
  • Are controversial in terms of accuracy. There is some reason to believe that surface contamination (such as cannabis smoke) can cause a false reading.
  • Can detect use which would not trigger other tests. Because of the short detection period for many drugs in urine, single use of many drugs longer than a week prior to using the patch will not cause a positive urine test. Because the skin patches are gathering sweat over an extended period of time, it is possible that any use during that time will produce a positive result.

Valid XHTML 1.0 Transitional