Direct Alcohol Biomarker Testing in Dried Blood Spots


Phosphatidylethanol (PEth) is a direct alcohol biomarker.  Peth in blood exists as a component of the red blood cell membrane and is an alcohol-specific biomarker, meaning that it is created only in the presence of ethanol.  Significant PEth levels can be detected up to approximately 2-4 weeks after alcohol ingestion.  The stability of PEth in dried blood spots makes it ideal for forensic testing and research purposes.  Our PEth assay uses state-of-the-art LC-MS/MS instrumentation.

Benefits of Using Dried Blood Spots

Detectable up to approximately
2-4 weeks

No Dry Time

1. Puncture

2. Collect

3. Ship

Dried blood spot collection is performed by the individual being tested (the donor) and must be observed by a staff member, after a short training session.  Specimen amount is 5 dried blood spots on the dried blood spot card when collecting from a finger or 5 milliliters of blood, if using standard venipuncture collection with anticoagulant.  Results are available 2-4 days after the sample is received in the laboratory.

Dried blood spot collection is quickly becoming the fastest, most convenient way to test for PEth.

Our services are not intended to diagnose, treat, cure or prevent any disease.  For forensic use only.

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