Overview
PEth (Phosphatidylethanol) is a phospholipid that forms in the body specifically as a result of alcohol consumption. Unlike traditional alcohol tests, PEth is a direct biomarker — it cannot be triggered by incidental or environmental alcohol exposure.
PEth testing from Chemisys Laboratories provides objective, defensible evidence of recent alcohol use — making it the preferred method for alcohol monitoring in clinical and compliance settings.
Traditional alcohol tests (breathalyzer, urine ethanol) only detect very recent consumption — often within hours. PEth provides a significantly longer and more specific detection window.
Why it matters
Clinical value
2–4 week detection window
Significantly longer than breathalyzer or urine ethanol testing.
Highly specific for ethanol
Not affected by incidental exposure to hand sanitizer, mouthwash, or fermented foods.
Objective, defensible data
Supports or refutes patient self-reporting with clinical reference ranges and interpretation guidance.
Preferred for alcohol monitoring
Valuable for MAT and alcohol recovery programs where precision matters.
Applications
Clinical settings we serve
- Alcohol Use Disorder (AUD) treatment programs
- MAT with naltrexone or acamprosate
- DUI/DWI monitoring programs
- Transplant patient alcohol monitoring
- Probation and court-ordered sobriety monitoring
- Child custody alcohol compliance monitoring
- Pain management with alcohol-interacting medications
Related services
Explore more
Addiction Treatment
Comprehensive toxicology solutions designed specifically for MAT, IOP, residential, sober living, and telehealth programs.
Learn moreBlood Testing
Advanced blood testing that transforms critical biomarkers into clear, actionable clinical insight.
Learn morePain Management
Comprehensive toxicology panels that help providers verify adherence, detect diversion, and protect prescribing decisions.
Learn more