Drug Test Detection Times

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Detection Times for common Drugs

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[edit] Drug Test Detection Periods

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 The following chart from LabCorp gives approximate detection periods for each substance by test type.<ref name="reference guide">"Drugs of Abuse Reference Guide," LabCorp Inc, Retrieved online April 11, 2007.</ref>

The ranges depend on amount and frequency of use, metabolic rate, body mass, age, overall health, and urine pH. For ease of use, the detection times of metabolites have been incorporated into each parent drug. For example, heroin and cocaine can only be detected for a few hours after use, but their metabolites can be detected for several days in urine. In this type of situation, we will report the (longer) detection times of the metabolites.

  • NOTE 1: Oral fluid or saliva testing results for the most part mimic that of blood. The only exception is THC. Oral fluid will likely detect THC from ingestion up to a maximum period of 18-24 hours
  • NOTE 2: Urine can not detect current drug use. It takes approximately 6–8 hrs. or more post-consumption for drug to be metabolized and excreted in urine. Similarly, hair requires two weeks, and sweat, seven days.
approximate values for detection periods
Substance Urine Hair Blood
Alcohol 3–5 days via Ethyl Gluconoride(EtG) metabolite or 10–12 hours via traditional method up to years 12 hours
Amphetamines (except meth) 1 to 2 days up to 90 days 12 hours
Methamphetamine 2 to 4 days up to 90 days 24 hours
Barbiturates (except phenobarbital) 2 to 3 days up to 90 days 1 to 2 days
Phenobarbital 7 to 14 days up to 90 years 4 to 7 days
Benzodiazepines Therapeutic use: 3 days. Chronic use (over one year): 4 to 6 weeks up to 90 days 6 to 48 hours
Cannabis
  • Single Use: 14 days
  • Chronic Use: Up to 30 days, sometime longer
up to 90 days 2 days
Cocaine 2 to 4 days up to 90 days 24 hours
Codeine 2 days up to 90 days 12 hours
Cotinine (a break-down product of nicotine) 2 to 4 days up to 90 days 2 to 4 days
Morphine 2 days up to 90 days 6 hours
Heroin 2 days up to 90 days 6 hours
LSD 2 to 24 hours Up to 3 days 0 to 3 hours
Methadone 3 days Up to 30 days 24 hours
PCP 14 days; up to 30 days in chronic users up to 90 days 24 hours

[edit] Drug Test Detection Times - Exceptions

The above drug test detection times are a guideline. A number of individual personal characteristics can effect how long drugs remain detectable in your system.

Many factors unique to the individual being tested determine the actual half-life of the particular drug including such variables as age, weight, body fat index, sex, metabolic rate, overall health and amount of drug consumed over what period of time.

Some factors in drug test detection times are:

  1. Overall health of the test subject.
  2. Metabolism of the test subject.
  3. Amount and frequency of ingested drugs.

[edit] External Links

pass a drug test
ebook to pass a drug test
pass hair drug test
pass urine drug test
pass saliva drug test
pass drug test forum
pass drug test blog

[edit] See Also

Pass A Drug Test
Drug Test
Drug Testing
Drug Testing In The Workplace
Drug Testing Methodologies
Types Of Drug Testing
Hair Drug Test
Urine Drug Test
Saliva Drug Test
Sweat Drug Test
Blood Drug Test

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