The authors implemented a new procedure for analyzing phencyclidine
(PCP) content in hair. They compare the results of analyses of hair with
results of analyses of blood and urine in 47 patients newly hospitalized
with acute psychiatric illness. Hair analysis identified 11 patients who
had used PCP, and blood and urine analyses did not identify any among the
sample population. In three patients, the results of hair analysis aided in
establishing a diagnosis of PCP intoxication. The authors discuss
interpretations of their findings and psychiatric applications of this new
technique.Abstract Teaser