Keyphrases
μ-opioid Receptor
100%
Opioid Use
100%
Methadone
100%
Buprenorphine
100%
Fentanyl
100%
Urine Drug Testing
100%
Chronic Pain Patients
100%
Meperidine
100%
Propoxyphene
100%
Monitoring Program
40%
Relative Abundance
20%
Drug Use
20%
Therapeutic Agents
20%
Opioids
20%
Liquid Chromatography-tandem Mass Spectrometry (LC-MS/MS)
20%
Analgesic
20%
Pain Patients
20%
Prolonged Use
20%
Urine Specimen
20%
Immunoassay
20%
Long Half-life
20%
Limit of Quantification
20%
N-methylation
20%
Moderate to Severe Pain
20%
Detection Rate
20%
Opioid Treatment
20%
Ethylidene
20%
Norbuprenorphine
20%
Dimethyl 3
20%
Biotransformation Pathway
20%
Pharmacology, Toxicology and Pharmaceutical Science
Opiate
100%
Biological Marker
100%
Methadone
100%
Drug Screening
100%
Chronic Pain
100%
Buprenorphine
100%
Duragesic
100%
1 benzyl 3 dimethylamino 2 methyl 1 phenylpropylpropionate hydrochloride
100%
Pethidine
100%
Prevalence
20%
Immunoassay
20%
Analgesic Agent
20%
Norbuprenorphine
20%
2 Ethylidene 1,5 Dimethyl 3,3 Diphenylpyrrolidine
20%
Norpropoxyphene
20%