Zero-Tolerance® Test Threshold Comparison Table (Screen/Confirm)
| Drug Class |
DOT/Routine Testing (ng/mL) |
Zero-Tolerance Drug Testing® (ng/mL) |
| Amphetamines |
500/500 |
250*/100 |
| Barbiturates |
300/200 |
200/100 |
| Benzodiazepines |
300/200 |
200/100 |
| Cocaine/Crack |
150/150 |
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.