Testing for fluoxymesterone (Halotestin) administration to man: identification of urinary metabolites by gas chromatography-mass spectrometry.
Paul Ziffren Olympic Analytical Laboratory, UCLA Department of Pharmacology, School of Medicine 90024.
- Published Article
Journal of steroid biochemistry
- Publication Date
Aug 28, 1990
Fluoxymesterone, an anabolic steroid, is metabolized in man primarily by 6 beta-hydroxylation, 4-ene-reduction, 3-keto-reduction, and 11-hydroxy-oxidation. These pathways of metabolism are suggested by the positive identification of 4 metabolites and the tentative identification of 3 other metabolites. Detection of the drug in urine is possible for at least 5 days after a single 10 mg oral dose to previously untreated adult males, by monitoring the presence of 2 metabolites, since the parent drug is not detectable more than 1 day after the dose.
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The corresponding record at NLM can be accessed at https://www.ncbi.nlm.nih.gov/pubmed/2214783