- 147 samples were checked: 84% were substances1 and 16% were used paraphernalia2
- 63% of the samples checked were expected3 to be fentanyl, cocaine, ketamine, or MDMA
- In an average5 fentanyl substance1:
- Fentanyl accounted for 4% of the sample (n=18)
- Etizolam accounted for 2% of the sample (n=1)
- Caffeine accounted for 27% of the sample (n=18)
- 13% of the expected3 fentanyl samples checked were known to be associated with an overdose: all contained fentanyl in combination with other central nervous system and respiratory depressants, like benzodiazepine-related drugs or xylazine, and over half also contained a high-potency nitazene opioid
- 69% of the expected3 fentanyl samples checked contained at least one benzodiazepine-related drug
- 36% of the expected3 fentanyl samples checked contained a nitazene opioid
- 21% of the expected3 fentanyl samples checked contained xylazine
Expected fentanyl substances
- 90% (18) of expected3 fentanyl substances checked4 contained fentanyl and other drugs, including:
- 89% (16) contained caffeine
- 67% (12) contained a benzodiazepine-related drug (!):
- 50% (9) contained flualprazolam (!)
- 33% (6) contained etizolam (!)
- 6% (1) contained bromazolam (!)
- 44% (8) contained a nitazene opioid (!):
- 28% (5) contained metonitazene (!)
- 17% (3) contained isotonitazene/protonitazene6 (!)
- 28% (5) contained xylazine (!)
- 22% (4) contained despropionyl fentanyl (4-ANPP) (!)
- 11% (2) contained phenacetin (!)
Unexpected noteworthy drugs found in other expected substances
- 6% (6) of the remaining substances checked,4 meaning substances that weren’t expected3 to be fentanyl, contained an unexpected noteworthy drug, including:
- 11% (2) of expected cocaine substances contained levamisole (!)
- 11% (2) of expected cocaine substances contained phenacetin (!)
- One expected heroin substance that did not contain heroin contained fentanyl (!)
- One expected Percocet substance that did not contain acetaminophen or oxycodone contained isotonitazene/protonitazene6 (!)
- One expected codeine substance that did not contain codeine contained etizolam (benzodiazepine-related) (!), flubromazolam (benzodiazepine-related) (!), and furanyl UF-17 (opioid-related) (!)
1 | Substances: Two types of samples are accepted by Toronto’s drug checking service: substances and used paraphernalia. Substances could be a small amount of powder, crystals, or rocks, a crushed bit of a pill, blotter, or a small amount of liquid.
2 | Used paraphernalia: Two types of samples are accepted by Toronto’s drug checking service: substances and used paraphernalia. Used paraphernalia could be a used cooker or filter, or leftover liquid from a syringe.
3 | Expected (drug): When a sample is submitted to be checked, the drug that sample was bought or got as is recorded. We call it the “expected drug”. Knowing the expected drug helps us tailor our harm reduction advice. It also helps us understand contamination to drugs rather than combinations of drugs (e.g., fentanyl was found in a cocaine sample rather than fentanyl and cocaine were found together).
4 | Reason for reporting only substance samples: While Toronto’s drug checking service checks both substances and used paraphernalia, we’re sharing findings from substances only. Paraphernalia, like cookers, are often re-used. The mass spectrometry technologies used for this drug checking service are so sensitive that very trace amounts of drugs may be found. This means that when paraphernalia is re-used, drugs from past use may present in the results for the sample that is being checked. This can interfere with up-to-date drug supply monitoring, so we’ve excluded used paraphernalia from this report.
5 | Average amount of drugs found: Toronto’s drug checking service can report the amount of fentanyl, cocaine, carfentanil, etizolam, and caffeine found as a proportion of the total sample submitted for expected opioid, cocaine, crack cocaine, and some other powder substance samples. Every other week, we include the average (median) amount of fentanyl, cocaine, carfentanil, etizolam, and caffeine found in expected fentanyl substances in our report. More information is available on our website.
6 | Isotonitazene/protonitazene: Because isotonitazene and protonitazene have a very similar chemical structure, it is not currently possible for Toronto’s drug checking service to differentiate between the two. For this reason, we report the two drugs together.
(!) | Unexpected noteworthy drug: “Noteworthy drugs” are drugs that (i) are linked to overdose or other adverse effects, (ii) are highly potent or related to highly potent drugs, or (iii) may not be desired by some service users. Noteworthy drugs are flagged when they are unexpectedly found in checked samples.