Radioimmunoassay of hair for determination of cocaine, heroin, and marijuana exposure: comparison with self-report.
Radioimmunoassay of hair (RIAH) was compared with self-report for cocaine, heroin, and marijuana in two populations: 109 persons entering residential drug user treatment and 86 at follow-up posttreatment. Among treatment entrants, 89% of 87 RIAH cocaine-positives and 96% of 45 RIAH heroin-positives were confirmed by self-report. However, among those followed-up posttreatment, only 51% of 43 RIAH cocaine-positives and 67% of 18 RIAH heroin-positives were so confirmed. Whereas 95% of 104 self-reports of cocaine use in the combined population were confirmed by RIAH, only 69% of 80 self-reports of heroin use were. Self-report and RIAH for marijuana were weakly associated.
School of Public Health, AIDS Research Unit, University of Massachusetts at Amherst 01003.
R
R
Hindin
J
J
McCusker
M
M
Vickers-Lahti
C
C
Bigelow
F
F
Garfield
B
B
Lewis
D000293:Adolescent; D000328:Adult; D002188:Cannabis / Q000737:chemistry*; D003042:Cocaine / Q000032:analysis*; D005260:Female; D006197:Hair / Q000737:chemistry*; D003932:Heroin / Q000032:analysis*; D006556:Heroin Dependence; D006801:Humans; D007407:Interviews as Topic; D008297:Male; D008385:Marijuana Smoking; D011863:Radioimmunoassay; D012650:Self Disclosure; D017678:Sex Distribution; D015813:Substance Abuse Detection
D003932:Heroin; D003042:Cocaine