How to Use Fentanyl Test Strips

Fentanyl test strips (FTS) can detect the presence of fentanyl in both opioids and non-opioids.
PLEASE NOTE: The water in this video was dyed blue for demonstration purposes, only sterile water should be used to test.
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For a list of fentanyl analogues detected by BTNX test strips, and specific dilution rates for meth and MDMA tests, read here: drive.google.c...
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