Determination of buprenorphine, norbuprenorphine, naloxone, and their glucuronides in urine by liquid chromatography–tandem mass spectrometry Posted on February 11, 2022 By Becky Carter Claudia Mariottini, Merja Gergov, Ilkka Ojanperä Drug Testing and Analysis; 13(9); 2021 Access article Chemistry, DREs / Traffic Safety Resource Prosecutors, Seized Drugs/Controlled Substances, Toxicology