Setting up

Tests salivary

Simples

36/5000 Sensitivity detection requirement

THC (Cannabis): 1ng/ml

30/5000 Amphetamines, cocaine, opiates : 10 ng/ml

Positive or negative test

Opiates, amphetamines, cocaine: good blood / saliva correlation

Positive only if recent consumption so dangerous subject

Negative in a chronic consumer and Positive only if recent consumption therefore dangerous subject

Unlike alcohol: no legal threshold, because illicit substance