Measures blood levels of phosphatidylethanol, an alcohol-specific biomarker
Immediately following collection, mix sample thoroughly by gently inverting 8 - 10 times to prevent clotting
Lavender (EDTA), 4mL
Immediately following collection, mix sample thoroughly by gently inverting 8 - 10 times to prevent clotting
Grey Sodium flouride (NaFl)
Ambient - < 3 days
Refrigerated - 2 weeks
Frozen - 6 months
Liquid chromatography/tandem mass spectrometry (LC/MS-MS)
PEth levels in excess of 20 ng/mL are considered evidence of moderate to heavy ethanol consumption