In our laboratories the initial screening of samples
for alcohol and drugs of abuse is performed under specially optimised
conditions applicable to the monitoring situations using a highly sensitive
and specific technique known as enzyme immunoassay(EIA).
A minimum laboratory screen designed to comply
with the regulations laid down in U.S. legislation would include alcohol,
cannabinoids, cocaine metabolites, opiates and phencyclidine. The client
may choose which substances are included in a drug profile, This may
also include e.g. amphetamines, benzodiazepines, LSD and methadone.