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Table 5 Positive fentanyl cases in samples with different MDMA concentrations

From: First drug-checking study at an electronic festival and fentanyl detection in the central region of Mexico

Fentanyl

NMDA concentration

Totals

 < 30%

 > 30%

Positive

7

7

14

Negative

7

1

8

Totals

14

8

22

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Harm Reduction Journal

ISSN: 1477-7517