title: Determination of fentanyl and alfentanil in plasma by high-performance liquid chromatography with ultraviolet detection.
mesh_terms: D015760:Alfentanil; D000701:Analgesics, Opioid / Q000097:blood*; D002851:Chromatography, High Pressure Liquid; D005283:Fentanyl / Q000031:analogs & derivatives* / Q000097:blood* / Q000493:pharmacokinetics / Q000627:therapeutic use; D006801:Humans; D007202:Indicators and Reagents; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000701:Analgesics, Opioid; D007202:Indicators and Reagents; D015760:Alfentanil; D005283:Fentanyl