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Fentanyl Test Strips

The Rapid Response Fentanyl Test Strip is an easy-to-use tool to detect fentanyl in liquid or powder drug samples. 

Testing Procedure

  1. Place a small amount (5-10 mg) of the drug into a clean container. 

  2. Add 5 mL of water and mix until dissolved. 

  3. Hold the strip by the blue end, where the product name (FYL) is printed. Do not touch the white section of the strip 

  4. Holding the strip vertically, dip the wavy end of the test strip into the liquid for 15 seconds. Do not dip past the solid maximum line. 

  5. Remove the strip. Place it on a flat, non-absorbent surface for 5 minutes. 

  6. Read the results. Do not read the results after 10 minutes.

Results Interpretation

Positive- Fentanyl Detected

Only one colored line appears in the control region (C). No apparent line appears in the test region (T). 


Negative- Fentanyl Could Not be Detected 

Two colored lines appear on the test strip. One line appears in the control region (C) and another line appears in the test region (T). 



Control line does not appear. If a control line does not appear after 5 minutes, the test must be thrown away. Review the testing procedure and repeat with a new test. 



How to Use the Rapid Response Fentanyl Test Strip 

Source: BTNX