What are the screening cut-off levels?

The screening cut-off levels on our tests are consistent with those of SAMHSA. Amphetamines—————-1000 ng/ml Barbiturates———————300ng/ml Benzodiazepines—————300 ng/ml Cocaine————————-300 ng/ml Marijuana————————50 ng/ml Methadone———————300 ng/ml Methamphetamine———–1000 ng/ml Opiates————————2000 ng/ml Phencyclidine——————–25 ng/ml Tricyclic Antidepressants—-1000 ng/ml