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Drug Testing Information
What Do They Test For?
  • Cannabinoids (marijuana, hash)
  • Cocaine (cocaine, crack, benzoylecognine)
  • Amphetamines (amphetamines, methamphetamines, speed)
  • Opiates (heroin, opium, codeine, morphine)
  • Phencyclidine (PCP)
Drug Tests Major Types
Traces of a drug can be detected from hair, urine, saliva and blood. A urine drug test is generally considered the most effective and inexpensive method of detecting the exact levels of a drug in human body.
Urine Drug Tests
  • Can be done by anyone, at home. Identifies traces of a drug used during the last seven days or longer. Can trigger negative drug results in case of abstinence of at least a week with most substances except for THC and Benzodiazepines. Usually subjected to temperature tests to cross-examine specimen authenticity
Hair Drug Tests
  • Are less intrusive than urine drug tests. Are more costly than urine drug testing. Are renowned for detecting a drug even after 90 days. Are least effective if done within a week of use. Cannot be conducted with just a single hair follicle. Have greater chances of testing positive than urine drug tests. Are not impacted by periods of brief abstinence. Are perfect for analyzing patterns of drug abuse over longer periods of time. Are more accurate when it comes to opiates.
Saliva Drug Tests
Can be easily done at home. Are mostly effective for detecting drug use over the last week. Are impacted by abstinence and give negative drug test results. Are an otherwise accurate form of testing.
Blood Drug Tests
Are the most complex of all drug testing methods. Are also quite expensive because they must be performed by trained professionals in a laboratory setting. Blood tests give the most accurate drug metabolite count in the human body. Are not generally employed on a broader scale and therefore are not common.
Detection Periods
A positive drug test can be triggered by a variety of reasons including the type of drug taken and the time that has passed since that intake. The exact amount of a drug taken is also important as abstinence before drug screening can help you passing a drug test. Each drug has a different incubation period in human body so you have to find the exact characteristics of a substance to prepare for a drug test.
Approximate Detection Time in Urine
  • Alcohol 1-2 days
  • Amphetamines (crystal, Ice, crank, methamphetamines) 5-7 days
  • Barbituates Short-Acting (ie. secobarbital) 1-2 days
  • Barbituates Long-Acting (ie. phenobarbital) 2-3 weeks
  • Benzodiazepines (Librium®,Valium®,Serax,Xanax®) 2-30 days
  • Cannabinoids (THC,Marijuana) 20-90 days
  • Clenbuterol 2-4 days
  • Cocaine (Crack) 3-5 days
  • Codeine 2-5 days
  • Euphorics (MDMA, Ecstasy) 3-7 days
  • LSD 1-4 days
  • Methadone 3-5 days
  • Methaqualone (Quaalude) l-14 days
  • Opiates (heroin, Vicode, morphine, codeine) 2-7 days
  • Phencyclidine (PCP, Angel Dust) 1-30 days
  • Phenobarbital 10-20 days
  • Propoxyphene (Darvon) 1-3 days
  • Psilocybin (mushrooms) 3-5
  • Steroids (anabolic) oral 14 days
False Positives
A false positive drug screen is a major hassle for many as you can test positive for a drug even if you have not used it for months. Some substances can cause a drug false positive screening due to human error or irregularities in the testing procedures. Laboratories now regularly divide a specimen into two to avoid a false positive drug screen. See our False Positive Information to find out more.
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