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How high-resolution techniques enable reliable steroid identification and quantification.

Andrea Bileck1, Christa E Fluck2, Nasser Dhayat1

  • 1Department of Nephrology and Hypertension and Department of BioMedical Research, Inselspital, Bern University Hospital, University of Bern, Switzerland.

The Journal of Steroid Biochemistry and Molecular Biology
|October 1, 2018
PubMed
Summary
This summary is machine-generated.

Accurate quantification of low-concentration analytes in bioanalysis requires rigorous method validation. Modern high-resolution instruments effectively identify progesterone metabolites in newborn urine, preventing errors common with lower-resolution tools.

Keywords:
Method validationProgesteronesSteroidomicsSteroidsTime-of-flight mass spectrometryTwo-dimensional gas chromatography

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Area of Science:

  • Analytical Chemistry
  • Biochemistry
  • Neonatal Medicine

Background:

  • Quantitative bioanalytical methods demand meticulous validation due to potential matrix effects and artifact generation during sample preparation.
  • Challenges are amplified when analyzing analytes present at very low concentrations.

Purpose of the Study:

  • To demonstrate the utility of modern high-resolution instruments in bioanalytical method validation.
  • To illustrate the identification and quantification of progesterone metabolites in neonatal urine.
  • To highlight the avoidance of common pitfalls associated with low-resolution instrumentation.

Main Methods:

  • Utilized high-resolution mass spectrometry for the analysis of urine samples.
  • Focused on the identification and quantification of specific progesterone metabolites.
  • Employed rigorous method validation protocols.

Main Results:

  • Successfully identified and quantified progesterone metabolites in newborn urine samples.
  • Demonstrated the capability of high-resolution instruments to accurately assign analytes.
  • Showcased the mitigation of artifacts and interferences common in bioanalysis.

Conclusions:

  • High-resolution instrumentation is crucial for reliable quantitative bioanalysis, particularly for low-concentration analytes.
  • Modern instruments enhance analyte verification and prevent errors, improving the accuracy of metabolite quantification in newborns.