THE 2-MINUTE RULE FOR FENTANYL PATCH

3. Keep the blue finish from the test and submerge the wavy conclusion in the strip within the h2o for 15 seconds, maintaining the liquid level under the blue line  Fentanyl and norfentanyl have been quantified in femoral and cardiac blood by large-effectiveness liquid chromatography-tandem mass spectrometry (LC–MS/MS) right after liquid–liqu