What Is a Cut-Off Level?
The cut-off level is a drug testing concept that refers to that point under which a drug test is called negative and above which a drug test is called positive. For drug screening, the cut-off is determined at a point that will optimize drug detection while maintaining minimum false-positive results. It is important to emphasize at this point that a negative result does not mean that a sample is drug-free, only that the level of concentration of any substance that it may contain is below the defined cut-off.
Drug Test Chart by Test Type:
| Drug Name | Abbreviation | Cut-Off Level |
| Alcohol | ALC | 0.02% |
| Amphetamines | AMP | 1000 ng/mL |
| Barbiturates | BAR | 300 ng/mL |
| Benzodiazepines | BZO | 300 ng/mL |
| Buprenorphine | BUP | 10 ng/mL |
| Cocaine | COC | 300 ng/mL |
| Ecstasy | MDMA | 500 ng/mL |
| Fentanyl | FEN | 200 ng/mL |
| Marijuana | THC | 50 ng/mL |
| Methadone | MTD | 300 ng/mL |
| Methamphetamine | mAMP (or MET) | 1000 ng/mL |
| Morphine | OPI | 300 ng/mL |
| Oxycodone | OXY | 100 ng/mL |
| Phencyclidine | PCP | 25 ng/mL |
| Tramadol | TRA | 100 ng/mL |
| Tricyclic Antidepressants | TCA | 1000 ng/mL |
12 Panel Now offers many different bulk drug testing kits including saliva and urine testing, and all test methods offer different drug detection periods and drug test cutoff levels. We have provided detection charts for each of our most popular selling drug testing kits.
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Here at 12 Panel Now, we are happy to provide information and spread awareness regarding these topics and more! Every Tuesday, we publish a Blog with information on current events, as well as insights regarding our products! We also provide the nation’s most affordable Drug Testing Supplies, including Drug Testing Cups and Strips both for personal, and medical use. If you have any questions or comments, please feel free to contact us or send us an email!