[D5]-Phosphatidylethanol / [d5] - PEth ammonium salt

Stable isotope labeled PEth is intended for use as an internal standard for the quantification of PEth by LC or GC-mass spectrometry. Phosphatidyl ethanol (PEth) is an abnormal phospholipid formed in the erythrocyte membrane exclusively in the presence of ethanol. It is described as exhibiting a high diagnostic sensitivity and specificity for detecting active chronic excessive drinking behaviors. It may also be useful for characterizing the drinking pattern (i.e. identifying binge drinking episodes) and differentiating light-moderate drinking from abstinence. Alcohol biomarkers are physiological indicators of alcohol exposure or ingestion and may reflect the presence of an alcohol use disorder” Substance Abuse Treatment Advisory. Sept 2006, Vol 5, Issue 4.