This biomarker is being studied to assess ethanol consumption?
Blood phosphatidyl ethanol (PEth) is only formed in the presence of ethanol and has a half-life in blood of 4-6 days. It is being studied as a potential biomarker to examine alcohol use in the previous 2-4 weeks.
Gerbase FE et al. Blood phosphatidyl ethanol levels as a tool to detect alcohol misuse in trauma patients. Clin Tox 2020 doi: https://doi.org/10.1080/15563650.2020.1822531