Date: November 1, 2001
Agency: Substance Abuse and Mental Health Services
Administration
Subject: Cutoff Concentrations as specified in the Mandatory
Guidelines for Federal Workplace Drug Testing Programs
The following cutoff concentrations are used by certified laboratories to test
urine specimens collected by Federal agencies and by employers regulated by the
Department of Transportation:
Initial Test Cutoff Concentration
(nanograms/milliliter)
| Marijuana metabolites
|
50 |
| Cocaine metabolites
|
300 |
| Opiate metabolites
|
2000
|
| Phencyclidine |
25 |
| Amphetamines |
1000 |
Confirmatory Test Cutoff Concentration
(nanograms/milliliter)
| Marijuana metabolite (1)
|
15 |
| Cocaine metabolite (2)
|
150 |
| Opiates: |
|
| Morphine |
2000 |
| Codeine |
2000 |
| 6-Acetylmorphine (4) |
10 |
| Phencyclidine |
25 |
| Amphetamines: |
|
| Amphetamine |
500 |
| Methamphetamine (3) |
500 |
Footnotes:
(1) Delta-9-tetrahydrocannabinol-9-carboxylic acid
(2) Benzoylecgonine
(3) Specimen must also contain amphetamine at a
concentration >= 200 nanograms/milliliter
(4) Test for 6-AM when morphine concentration exceeds
2000 nanograms/milliliter
