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Table 3 Results of urine toxicology analysis and comparison to self-reported use of IMF, heroin, methamphetamine, and other drugs (N = 89)

From: Attitudes and experiences with fentanyl contamination of methamphetamine: exploring self-reports and urine toxicology among persons who use methamphetamine and other drugs

Drugs/metabolites

All participants

N = 89

Unknow IMF exposure, no reported past 3-day IMF use1

N = 16

Unknown IMF exposure, no reported past 30-day heroin/IMF use2

N = 10

Results of urine toxicology analysis

Self-reported use in the past 3 days

Results of urine toxicology analysis

Self-reported use in the past 3 days

Results of urine toxicology analysis

Self-reported use in the past 3 days

Methamphetamine (and/or amphetamine)

78 (87.6%)

73 (82.0%)

16 (100.0%)

16 (100.0%)

10 (100.0%)

10 (100.0%)

Cocaine

37 (41.6%)

24 (27.0%)

9 (56.3%)

3 (18.8%)

4 (40.0%)

1 (10.0%)

Benzodiazepines

16 (18.0%)

20 (22.5%)

5 (31.3%)

3 (18.8%)

4 (40.0%)

2 (20.0%)

Heroin (morphine/6-MAM)

17 (19.1%)

26 (29.2%)

2 (12.5%)

3 (18.8%)

1 (10.0%)

0 (0%)

IMF (fentanyl and/or analogs, any):

64 (71.9%)

48 (53.9%)

16 (100.0%)

0 (0.0%)

10 (100.0%)

0 (0%)

Fentanyl (and/or norfentanyl metabolite)

64 (71.9%)

48 (53.9%)

16 (100.0%)

0 (0.0%)

10 (100.0%)

0 (0%)

Carfentanil

5 (5.6%)

6 (6.7%)

1 (6.3%)

0 (0.0%)

0 (0.0%)

0 (0%)

Despropionylfentanyl (4-ANNP)

51 (57.3%)

 

10 (62.5%)

 

7 (7.0%)

 

Acetylfentanyl

38 (42.7%)

 

7 (43.8%)

 

3 (30.0%)

 

Fluorofentanyl

17 (19.1%)

 

5 (31.3%)

 

4 (40.0%)

 

Despropionyl Fluorofentanyl

16 (18.0%)

 

6 (37.5%)

 

4 (40.0%)

 

Tetrahydrofuran Fentanyl

12 (13.5%)

 

0 (0.0%)

 

0 (0.0%)

 

Benzylfentanyl

10 (11.2%)

 

1 (6.3%)

 

1 (10.0%)

 

Valeryl/Isovaleryl Fentanyl

6 (6.7%)

 

0 (0.0%)

 

0 (0.0%)

 

Butyryl/Isobutyryl Fentanyl

2 (2.2%)

 

0 (0.0%)

 

0 (0.0%)

 

Acrylfentanyl

1 (1.1%)

 

0 (0.0%)

 

0 (0.0%)

 

Xylazine

11 (12.4%)

 

2 (12.5%)

 

1 (10.0%)

 
  1. 1Test positive for IMF but reported no use of IMF in the past 3 days
  2. 2Test positive for IMF but reported no use of heroin or IMF in the past 30 days