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Zero-Tolerance
® Test Threshold Comparison Table (Screen/Confirm)

Drug Class
DOT/Routine Testing (ng/mL) 
Zero-Tolerance Drug Testing® (ng/mL)
Amphetamines
1000/1000
1000*/100
Barbiturates
300/200
200/100
Benzodiazepines
300/200
200/100
Cocaine/Crack
300/150
100/50
Marijuana
50/15
20/5
Opiates (Narcotics)
2,000/2,000
100/100
Phencyclidine (PCP)
25/25
25/10

*Also includes MDMA (Ecstasy), MDEA (Eve), MDA and PMA at 100 ng/mL screening threshold.