title: Endogenous and exogenous testosterone levels after administration of deuterium-labelled testosterone propionate in hypogonadotropic hypogonadism.
abstract: A gas chromatography-mass spectrometry-selected ion monitoring technique was employed to determine simultaneously the plasma concentrations of endogenous and exogenous testosterone in three patients with hypogonadotropic hypogonadism after a single i.m. dose of testosterone propionate-19,19,19-d3. The plasma levels of testosterone-19,19,19-d3 derived from testosterone propionate-19,19,19-d3 were maintained above the normal testosterone levels (greater than 4 ng/ml) for 48 h, while the plasma levels of endogenous testosterone changed little.
authors.forename: M
authors.initials: M
authors.lastname: Fujioka
authors.forename: Y
authors.initials: Y
authors.lastname: Shinohara
authors.forename: S
authors.initials: S
authors.lastname: Baba
authors.forename: M
authors.initials: M
authors.lastname: Irie
authors.forename: K
authors.initials: K
authors.lastname: Inoue
mesh_terms: D000328:Adult; D006801:Humans; D007006:Hypogonadism / Q000097:blood / Q000188:drug therapy*; D007273:Injections, Intramuscular; D008297:Male; D008875:Middle Aged; D013739:Testosterone / Q000008:administration & dosage / Q000097:blood / Q000493:pharmacokinetics* / Q000627:therapeutic use
chemical_list: D013739:Testosterone