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Test Code FFPETM Phosphatidylethanol Confirmation, Blood

Additional Codes

Mayo PETH
Epic ID LAB3157

 

Specimen Type

Whole Blood EDTA


Specimen Required


Container/Tube: Lavender top (EDTA)

Specimen Volume: 1 mL

Collection Instructions:

1. Do not use alcohol to clean arm. Use alternative (such as Betadine, also known as Povidone Iodine) to cleanse site before specimen collection.

2. Draw blood in tubes smaller than 10 mL if possible.

3. Do not centrifuge.

4. Send whole blood specimen in original tube. Do not aliquot.


Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time
Whole Blood EDTA Frozen (preferred) 28 days
  Refrigerated  14 days
UPH Waterloo Region Lab Test Catalog Note:

Transport frozen in original tube. 

Reject Due To

Gross lipemia OK
Gross icterus OK

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Method Name

Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)

Useful For

Verifying abstinence or use of ethanol, especially in liver transplant candidates/patients

Day(s) Performed

Monday through Sunday

Report Available

2 to 5 days

Reference Values

Negative (<10 ng/mL)

 

Cutoff concentrations by liquid chromatography tandem mass spectrometry:

PEth 16:0/18:1 (POPEth): 10 ng/mL

PEth 16:0/18:2 (PLPEth): 10 ng/mL

CPT Code Information

G0480

80321 (if appropriate for select payers)

Clinical Toxicology CPT Code Client Guidance