Phosphatidylethanol (PEth)
Also known as: Ethyl Alcohol Biomarker
Use
Measures blood levels of phosphatidylethanol, an alcohol-specific biomarker
Special Instructions
Not provided.
Limitations
The test performance characteristics were determined by Labcorp but not cleared or approved by the FDA. The results should be considered in the context of additional clinical and behavioral data, as the presence of PEth alone does not conclusively indicate alcohol use behaviors. Additionally, the detection limit is set at 20 ng/mL, below which the presence of PEth cannot be reliably reported.
Methodology
Mass Spectrometry
Biomarkers
LOINC Codes
- 74661-0
- 76660-0
- 74661-0
Result Turnaround Time
5-10 days
Related Documents
For more information, please review the documents below
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.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 3 days |
| Refrigerated | 2 weeks |
| Frozen | 6 months |