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Implementation Guidelines - Federal Transit Administration - U.S. ...

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Appendix F. Fact Sheets<br />

Drug Detection Periods<br />

Detection periods vary; rates of metabolism and excretion are different<br />

for each drug and use. Detection periods should be viewed as<br />

estimates. Cases can always be found to contradict these<br />

approximations.<br />

Drug<br />

Amphetamines<br />

Amphetamine<br />

Methamphetamine<br />

Cocaine<br />

Benzoylecgonine<br />

Cannabinoids (Marijuana)<br />

Casual Use<br />

Chronic Use<br />

Ethanol (Alcohol)<br />

Opiates<br />

Codeine<br />

Hydromorphone (Dilaudid)<br />

Morphine (for Heroin)<br />

Phencyclidine (PCP)<br />

Casual Use<br />

Chronic Use<br />

2-4 days<br />

2-4 days<br />

12-72 hours<br />

2-7 days<br />

Up to 30 days<br />

12-24 hours<br />

2-4 days<br />

2-4 days<br />

2-4 days<br />

2-7 days<br />

Up to 30 days<br />

Detection Period<br />

Appendix F. Fact Sheets F-1 August 2002

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