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