Fig. 2From: Feasibility study of using mobile phone-based experience sampling to assess drug checking by opioid street drug usersFlow chart of daily test strip results from submission to risk reduction post-testing. Note: All figures are based on the number of valid daily reports submitted and/or the results obtained for drug checking at each reporting/testing step. All percentages shown are conditional, contingent on the number of reports submitted, the results of the submitted reports, or the behaviors taken given the obtained testing results. Because only a small number of tests [3] were conducted exclusively using the benzodiazepine test strips, the positive results and overdose risk behavior percentages are based on the reports of fentanyl test strip useBack to article page