Oral fluid fentanyl testing detects recent use under direct observation, eliminating concerns about sample tampering. LC-MS/MS provides sensitive, specific identification of fentanyl, important because fentanyl is not detected by routine opiate screens.
This test is used in pain management, addiction treatment monitoring, and clinical settings where recent fentanyl exposure is of interest. Fentanyl detection windows in oral fluid are shorter than urine — typically 24-48 hours. Sample type is oral fluid.