However, an alternative to consider would be to use an internal standard where the isotope cannot be exchanged, for example testosterone-2,3,4- 13 C 3. Stable isotope labeled steroids are reliable internal standards for researchers developing assays or laboratories conducting routine testing. If you are interested in a specific labeling pattern which is not listed in our current product offering, please Contact Us.
We would be happy to discuss your requirements and work with you to provide a cost effective solution. We are a leading supplier to the global Life Science industry with solutions and services for research, biotechnology development and production, and pharmaceutical drug therapy development and production. Isotopically Labeled Steroid Standards. Introduction The use of anabolic steroids, such as testosterone, to enhance physical and athletic performance continues to plague competitive sports.
Labeled Internal Standards Analyses of biological samples such as urine or serum are often performed due to the ease of obtaining and storing a sample. Anabolic - Androgenic Steroids The detection of synthetic steroids is a continuing challenge for authorities and analytical laboratories. References 1. CDC project on standardizing steroid hormone measurements.
Wieling J. Rapid determination of serum testosterone by liquid chromatography-isotope dilution tandem mass spectrometry and a split sample comparison with three automated immunoassays. Clinical Biochemistry. Liquid Chromatography? Tandem Mass Spectrometry. Unusual observations during steroid analysis. Rapid Commun. Mass Spectrom.. Liquid chromatographic? Rapid quantification of steroid patterns in human serum by on-line solid phase extraction combined with liquid chromatography?
Clinica Chimica Acta. Related Articles Ginsenosides. A validated amino acid analysis assay for accurate quantification of stable isotope labeled protein reference materials: SIL thyroglobulin case study. Flame Retardant Analytical Standards. Social Media.