Table 2.
Participant beliefs and concerns about fentanyl, anticipated reactions if learned about fentanyl exposure, and prevalence of testing positive for fentanyl or other analogs.
| Full Sample (n=40) |
Known Fentanyl Use (Self-Report) (27.5%, n=11) |
No Known Fentanyl Use (Self-Report) (72.5%, n=29) |
|
|---|---|---|---|
| Beliefs and Concerns about Fentanyl | % Agreement (n) | % Agreement (n) | % Agreement (n) |
| Would want to know if their heroin contains fentanyl | 87.5 (35) | 72.7 (8) | 93.1 (27) |
| Suspect they may have been exposed to fentanyl | 67.5 (27) | 72.7 (8) | 65.5 (19) |
| Concerned about fentanyl adulteration | 65.0 (26) | 54.6 (6) | 69.0 (20) |
| Expect their hair to test positive for fentanyl | 47.5 (19) | 90.9(10)* | 31.0 (9) |
| Believe they would notice if their heroin contained fentanyl | 30.0 (12) | 54.6 (6) | 20.7 (6) |
| Reaction if Learned Hair was Positive for Fentanyl | % Agreement (n) | % agreement (n) | % Agreement (n) |
| Warn users I know that they may be unknowingly using fentanyl | 82.5 (33) | 81.8 (9) | 82.8 (24) |
| Try to stop using heroin | 75.0 (30) | 72.7 (8) | 75.9 (22) |
| Use heroin more slowly or in smaller amounts | 67.5 (27) | 81.8 (9) | 62.1 (18) |
| Take a small test dose first to see how you react | 67.5 (27) | 72.7 (8) | 65.5 (19) |
| Make sure someone nearby has naloxone to reverse an overdose | 65.0 (26) | 81.8 (9) | 58.6 (17) |
| Find a more trustworthy dealer | 57.5 (23) | 54.6 (6) | 58.6 (17) |
| Use drug test strips that can detect fentanyl | 47.5 (19) | 54.6 (6) | 44.8 (13) |
| Compounds Detected in Hair Sample | % Positive (n) | % Positive (n) | % Positive (n) |
| Fentanyl | 97.5 (39) | 100.0 (11) | 96.6 (28) |
| 4-ANPP | 90.0 (36) | 90.9 (10) | 89.7 (26) |
| Norfentanyl | 90.0 (36) | 90.9 (10) | 89.7 (26) |
| Acetyl-fentanyl | 82.5 (33) | 90.9 (10) | 79.3 (23) |
| Furanyl-fentanyl | 47.5 (19) | 45.5 (5) | 48.3 (14) |
| U-47700 | 7.5 (3) | 18.2 (2) | 3.5 (1) |
*
p < .01