Pharmacy-based analytical toxicology service.

An analytical toxicology service, which primarily tests specimens for drugs of abuse but also determines blood levels of therapeutic drugs, is described. Analytical methods discussed are the enzyme multiplied immunoassay technique, hemagglutination-inhibition, the free radical assay technique, radioimmunoassay, thin-layer and gas liquid chromatography, and spectrophotometric analysis. A typical scheme for drug analysis is presented.