Posted Date
Effective Date
Update Type New Tests
CPT Code 80321
Order Code PETH

Phosphatidylethanol Whole Blood

Order Code:                             PETH

CPT Code:                               80321


On December 7, 2020 MLabs will offer Phosphatidylethanol, whole blood (PETH) testing in-house. This will replace the sendout test to Mayo Medical Laboratories.


Test Usage: The Phosphatidylethanol (PETH) assay measures abnormal phospholipids, specifically, 16:0/18:1, 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphoethanol that are a direct biomarker found in the blood following alcohol consumption.  This can be detected in the blood for up to 3-4 weeks post heavy alcohol consumption.


Collection Instructions: Collect a minimum of 1 mL of whole blood an EDTA lavender top vacutainer. Ship the specimen refrigerated within 72 hours or frozen within 14 days of collection.


Analytic Time: 6-13 days


Methodology:  LCMS


Reference range: <20 ng/mL in pediatric and adult patients