PEth Level Calculator | Estimate Blood Alcohol

PEth Level Calculator

Understanding PEth Testing Level

Phosphatidylethanol (PEth) is a blood alcohol biomarker used for long-term alcohol monitoring. This Phosphatidylethanol blood test helps track alcohol intake over several weeks. Use our PEth calculator to estimate your blood PEth level based on weekly drinks, body weight, and drinking period. The PEth blood test measures Phosphatidylethanol levels in red blood cells and reflects cumulative alcohol consumption. This educational tool helps understand alcohol exposure trends, PEth detection timeframe, and comparative results alongside ETG tests.

How PEth Is Formed in Blood

  • Formed in red blood cells after alcohol consumption
  • Reflects cumulative alcohol intake over 2–4 weeks
  • Detection window is generally longer than ETG (up to 3–4 days)

Factors Affecting PEth Levels

  • Blood alcohol biomarker levels
  • Alcohol intake amount and frequency
  • Body weight and gender
  • Liver function and metabolism
  • Duration of drinking period

How to Interpret PEth Results

Higher PEth levels indicate heavier drinking patterns. Use this in conjunction with other results to get a complete picture of recent and long-term alcohol monitoring.

PEth Test Limitations

  • PEth levels vary individually; results are estimates
  • For educational purposes only
  • Laboratory confirmation is required for medical, legal, or probation decisions
  • Avoid using this tool for legal decisions without confirmation from a certified lab

The PEth Level Calculator estimates your blood PEth levels using weekly drinks, body weight, and drinking period.

A PEth blood test can remain detectable for 2–4 weeks depending on alcohol consumption, metabolism, and body weight.

PEth is more reliable for long-term alcohol monitoring, while ETG detects recent alcohol intake in urine.

Scroll to Top