Rapid Results DNA + Drug Testing (PEth) Blood Alcohol Test is able to identify alcohol use in a person as far back as 3-4 weeks prior to the specimen collection. Phosphatidylethanol, or PEth, is formed in red blood cell membranes when they are exposed to alcohol. It is considered a direct biomarker for alcohol consumption.
Research has shown that use of alcohol-based hand sanitizers and mouthwashes will not affect the results of a PEth test. A confirmed positive result for PEth can be interpreted as evidence of alcohol use and requires a standard blood sample.
