title: Assay for serum sufentanil level is not sensitive.
mesh_terms: D000777:Anesthetics / Q000097:blood*; D005283:Fentanyl / Q000031:analogs & derivatives* / Q000097:blood; D006801:Humans; D008722:Methods; D017409:Sufentanil
chemical_list: D000777:Anesthetics; D017409:Sufentanil; D005283:Fentanyl