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Phosphatidylethanol (PEth)

CPT: 80321
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Synonyms

  • Ethyl Alcohol Biomarker

Expected Turnaround Time

5 - 10 days


Specimen Requirements


Specimen

Whole blood


Volume

1 mL


Minimum Volume

0.5 mL


Container

Lavender-top (EDTA) tube or gray-top (sodium fluoride) tube


Storage Instructions

Submission/transport (<3 days): Room temperature. For storage beyond three days, specimen should be refrigerated or frozen. Specimen is stable for three days at room temperature, for two weeks refrigerated, and for six months frozen.


Test Details


Use

Measures blood levels of phosphatidylethanol, an alcohol-specific biomarker


Methodology

Liquid chromatography/tandem mass spectrometry (LC/MS-MS)


Reference Interval

PEth levels in excess of 20 ng/mL are considered evidence of moderate to heavy ethanol consumption.


LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
791584 Phosphatidylethanol (PEth) 791583 Phosphatidylethanol (PEth) ng/mL 74661-0

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CPT Statement/Profile Statement

The LOINC® codes are copyright © 1994-2020, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or non-commercial purpose, subject to the terms under the license agreement found at https://loinc.org/license/. Additional information regarding LOINC® codes can be found at LOINC.org, including the LOINC Manual, which can be downloaded at LOINC.org/downloads/files/LOINCManual.pdf