The PEth Blood Test in the Security Environment: What it is; Why it is Important; and Interpretative Guidelines

Area of Science:

• Biochemistry
• Toxicology
• Forensic Science

Background:

• Phosphatidylethanol (PEth) is an emerging biomarker for alcohol consumption.
• Existing ethanol biomarkers have limitations in accuracy and detection windows.
• PEth offers a sensitive and specific method for monitoring alcohol use.

Purpose of the Study:

• To review and synthesize laboratory findings on PEth.
• To propose updated guidelines for interpreting PEth values.
• To highlight the utility of PEth testing in diverse applications.

Main Methods:

• Literature review of PEth laboratory findings.
• Analysis of factors contributing to PEth's suitability as a biomarker.
• Development of interpretation guidelines based on PEth concentrations.

Main Results:

• PEth is a suitable biomarker due to its chemical properties.
• Proposed interpretation guidelines: Light/No Consumption (<20 ng/mL), Significant Consumption (20-199 ng/mL), Heavy Consumption (>200 ng/mL).
• PEth testing demonstrates broad applicability.

Conclusions:

• Updated PEth interpretation guidelines are crucial for accurate alcohol use assessment.
• PEth testing is valuable in employment, security, medical, and legal contexts.
• PEth monitoring aids in treatment programs, transplant evaluations, and professional monitoring.