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Fig. 2 | Harm Reduction Journal

Fig. 2

From: High concentrations of illicit stimulants and cutting agents cause false positives on fentanyl test strips

Fig. 2

Fentanyl test strip images of interference compounds: FTS were ran with water, cocaine, methamphetamine, MDMA, diphenhydramine capsules, and diphenhydramine tablets and were photographed after 5 min. The testing bar (right side of testing pad) for moderately concentrated samples (approximately > 2 mg/mL) of methamphetamine, MDMA, diphenhydramine capsules, diphenhydramine tablets did not appear indicating false positives

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