Table 1 Uptake of fentanyl test strips, self-reported results, and context of use
|  | N = 72 |
|---|---|
Used at least one FTS by time of follow-up survey % (n) | 81 (58) |
Among those who reported use of FTS (n = 58) | |
Self-reported result/s % (n) | N = 57# |
 At least one positive result | 44 (25) |
 At least one negative result | 97 (55) |
At least one invalid result | 12 (7) |
Median number of FTS used (IQR) | 6 (4–8) |
Total number of FTS used | 342 |
 Negative | 269 |
 Positive | 56 |
 Invalid | 15 |
 Don’t know | 2 |
Total number of FTS given away | 72 |
Substances tested^ % (n) | N = 58 |
 Heroin | 95 (55) |
 Methamphetamine | 29 (17) |
Location of testing^ % (n) | N = 58 |
 Own home | 83 (48) |
 Someone else’s home | 17 (10) |
 Medically Supervised Injecting Centre | 14 (8) |
Who with when used FTS^ % (n) | N = 58 |
 Friend/partner/peer/relative/acquaintance | 81 (47) |
 Alone | 35 (20) |
 Health professional | 14 (8) |
Why did not use any/all FTS^ % (n) | N = 60 |
 Number of strips exceeded number of times injected | 33 (20) |
 Didn’t have them on me when using | 22 (17) |
 Forgot I had them | 20 (12) |
 Gave the rest away | 10 (6) |