Table 1.

Cutoff values for immunological drug screening in urine

Drug	Cutoff
Amphetamine	500 ng/mL
Cannabis (THC and metabolites)	50 ng/mL
Opiates	300 ng/mL
Cocaine	300 ng/mL
Benzodiazepines	300 ng/mL
Barbiturates	300 ng/mL
Methadone	300 ng/mL