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Zero-Tolerance® Period of Detection Table

Drug Class
DOT/Routine Testing
Zero-Tolerance Drug Testing
Amphetamines
Up to 3 Days
Up to 5 Days
Barbiturates - Short Acting
Up to 3 Days
Up to 6 Days
Barbiturates - Long Acting
Up to 10 Days
Up to 30 Days
Benzodiazepines
Up to 5 Days
Up to 10 Days
Cocaine/Crack
Up to 3 Days
Up to 5 Days
Marijuana
Up to 3 Days
Up to 10 Days
Opiates (Narcotics)
Up to 3 Days
Up to 5 Days
Phencyclidine (PCP)
Up to 3 Days
Up to 5 Days