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PEth in review: Phosphatidylethanol discovery and LC-MS/MS analysis
Grace R Williams1, Justin L Poklis1, Carrol Nanco2
1Virginia Commonwealth University, United States.
Summary
This review covers phosphatidylethanol (PEth) as a biomarker for ethanol consumption, focusing on LC-MS/MS analysis. It details PEth discovery, interpretation, and optimal methods for clinical use.
Area of Science:
- Clinical Chemistry
- Biomarker Analysis
- Analytical Toxicology
Background:
- Phosphatidylethanol (PEth) is a direct biomarker of ethanol ingestion.
- Accurate PEth measurement is crucial for clinical monitoring and diagnosis.
- Understanding PEth characteristics aids in interpreting ethanol consumption patterns.
Purpose of the Study:
- To provide comprehensive information on phosphatidylethanol (PEth) as a clinical biomarker.
- To evaluate and compare contemporary analytical methods for PEth detection.
- To offer guidance on sample preparation, analysis, and interpretation for LC-MS/MS.
Main Methods:
- Review of published literature on phosphatidylethanol analysis.
- Focus on Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS) techniques.
- Discussion of whole blood sample preparation and stability considerations.
Main Results:
- LC-MS/MS is a primary method for PEth quantification.
- PEth stability in whole blood samples is a key analytical consideration.
- Dried-blood spot analysis offers a potential alternative for PEth detection.
Conclusions:
- PEth is a valuable biomarker for assessing recent and chronic ethanol intake.
- Standardized LC-MS/MS methods are essential for reliable PEth results.
- Further research into endogenous phospholipid analysis is warranted.
