Ethyl glucuronide and ethyl sulfate: a review of their roles in forensic toxicology analysis of alcohol postmortem.

Matrix effects can be a substantial challenge in analytical methods based on LC-MS because they directly affect the ionization of analytes. However, these problems can be avoided due to the high cutoff values used to identify positive results for these ethanol biomarkers, which are often above 0.1-1 mg/L, and using internal standards. Research on using tissue specimens is recommended as most of the reported results on this type of specimen were promising.