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Related Experiment Videos

Urinary steroid profiling.

Norman F Taylor1

  • 1Department of Clinical Biochemistry, King's College Hospital, School of Medicine, London, UK.

Methods in Molecular Biology (Clifton, N.J.)
|June 10, 2006
PubMed
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Urinary steroid profiling quantifies steroid metabolism pathways, aiding in diagnosing inborn errors and altered steroid secretion disorders. This method uses advanced chromatography and mass spectrometry for accurate analysis.

Area of Science:

  • Endocrinology
  • Clinical Chemistry
  • Metabolomics

Background:

  • Urinary steroid profiling offers quantitative insights into steroid biosynthesis and catabolism.
  • It is crucial for diagnosing inborn errors of steroid metabolism.
  • It is also valuable for identifying disorders associated with altered steroid secretion.

Purpose of the Study:

  • To detail a general method for urinary steroid profiling.
  • To provide normal ranges for adults and children.
  • To offer guidance on chromatogram evaluation and profile interpretation in steroid disorders.

Main Methods:

  • Steroids, primarily as glucuronide and sulphate conjugates, are extracted using solid-phase cartridges.
  • Enzymatic hydrolysis, re-extraction, and derivatization (methoxime trimethylsilyl) are performed.

Related Experiment Videos

  • Analysis utilizes high-performance liquid chromatography (HPLC) and gas chromatography-mass spectrometry (GC-MS).
  • Specialized conjugate separation (liquid gel chromatography) is employed for newborns due to high sulphate excretion.

    • Main Results:

    • The study details a comprehensive methodology for urinary steroid profiling.
    • Normal ranges for adults and children are established.
    • The findings provide a framework for interpreting steroid profiles in various endocrine and metabolic conditions.

    Conclusions:

    • This validated method enables precise quantitative analysis of urinary steroids.
    • Accurate steroid profiling is essential for diagnosing a range of steroidogenic and metabolic disorders.
    • The provided reference ranges and interpretive guidelines enhance clinical utility.