Hospital
$550+
Other Labs
$249
TestWell
$186.99
Phosphatidylethanol (PEth) is a phospholipid that forms in red blood cell membranes only in the presence of alcohol. Unlike EtG or liver enzyme tests, PEth provides a highly specific and sensitive marker for alcohol consumption over the preceding 3 to 4 weeks, making it virtually impossible to produce a false positive. It is considered the gold standard for monitoring chronic alcohol use in treatment programs, legal proceedings, and clinical care.
Sample Type
Blood draw
Fasting
Not required
Results In
5–7 business days
Performed By
Labcorp
1 biomarker tested
Your PEth Alcohol Biomarker results will include values for each of the 1 biomarker tested, along with reference ranges. Results are reviewed by a licensed physician before being released to your secure portal.
If any values fall outside the normal range, your report will include guidance on what that may mean and recommended next steps. You'll receive an email notification when your results are ready, typically within 5–7 business days.
Typical reference range layout
Lab reports show where your value sits relative to established reference intervals—your physician interprets this in context for you.
No fasting required. A standard blood draw is performed.
TestWell Price
$186.99
No insurance needed · HIPAA compliant
Frequently ordered together
Customers who ordered PEth Alcohol Biomarker also added these for a more complete health picture.
7 tests that evaluate your liver's health and function — detects damage, disease, and bile flow issues.
$19.99
Measures uric acid levels — elevated levels can cause gout and kidney stones.
$21.99
8 essential blood chemistry markers covering kidney function, blood sugar, and electrolyte balance.
$20.99
PEth Alcohol Biomarker
$186.99