Drug Detection Windows

 

Drug Detection Windows
THC (Marijuana) 1-3 Weeks*
Cocaine 2-4 Days
Amphetamines 2 Days
Barbiturates 1-2 Days
Opiates` 1-2 Days
PCP 5-7 Days
LSD 1-2 Days
Steroids 3 Days or Longer**
Notes:
* Longer than 3 weeks is indicative of chronic or heavy use.
** Length of detection determined by type and duration of use.
 

Information Courtesy of Department of Defense, the United States Navy, and the Manual for Courts-Martial