Agreement between urinalysis and self-reported drug use

Rahul Hamid, Sherry Deren, Mark Beardsley, Stephanie Tortu

Research output: Contribution to journalArticlepeer-review


One hundred fifty-eight drug users received an interview that included self-reported drug use. Opiate/cocaine use in the prior 48 hours was assessed by urinalysis. Fifty-five subjects received a urine test after the interview and 103 were tested before. Chi-square tests were performed to determine if agreement between self-reported drug use and urine test results was associated with timing of urine testing. The rate of agreement was 58% when the urine test was performed after the interview and 93% when performed before the interview (X2 = 28.6, p < .001). Conducting urine tests before an interview can increase the accuracy of self-reports.

Original languageEnglish (US)
Pages (from-to)1585-1592
Number of pages8
JournalSubstance Use and Misuse
Issue number11
StatePublished - 1999


  • Urinalysis
  • Urine testing
  • Validity

ASJC Scopus subject areas

  • Health(social science)
  • Medicine (miscellaneous)
  • Public Health, Environmental and Occupational Health
  • Psychiatry and Mental health


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