Remote BreathalyzerImproving Remote Breathalyzer Procedures Used by Clinicians and Researchers to Remotely Monitor Alcohol Use

Remote breath alcohol monitors have been increasingly adopted for use in clinical, research and forensic settings to monitor alcohol use because they offer several key advantages over other available monitoring methods. However, it remains unknown if remote breathalyzers reliably detect alcohol use because there is up to a 10-hour window of time when breath samples are not obtained (to allow for sleeping). Additionally, the investigators will examine whether a supplemental measurement of a blood alcohol use biomarker (phosphatidylethanol) can confirm abstinence and/or detect individuals engaging in late-evening drinking to avoid the negative consequences associated with detected alcohol use.