The following are the estimated length of time these drugs are detectable.
• Alcohol – 1 oz. for 1.5 hours
• Phencyclidine (PCP) – 1 week
• Methadone – 2-3 days
• Methamphetamine – 2-3 days
• Marijuana – casual use, 3-4 days; chronic use, several weeks
• LSD – 8 hours
• Morphine – 2-3 days
• Cocaine – 2-10 days
• Barbiturates – 2-10 days
• Benzodiazepines – 2-3 weeks
• Amphetamines – 48 hours
• Heroin Metabolite – less than 1 day
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