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Test Code ETGR Ethyl Glucuronide Screen with Reflex to Confirmation, Urine

Clinical Indications

Useful for general screening in the assessment of ethanol exposure in the contexts of compliance and/or abuse. A screen with reflex testing is the preferred method for ruling out ethanol exposure. Results do not accurately correlate with amount or frequency of ethanol use.

Additional Test Codes

Epic Order Name: ETHYL GLUCURONIDE SCREEN WITH REFLEX, URINE (aka ETGR)
Sunquest Order Code: ETGR
Epic Px Code: LAB2951

Specimen Collection Type

Random urine

Minimum Collection Volume

1.0 mL

Reference Range

Screen cutoff concentration: 500 ng/mL

Critical Value

n/a

Interpretation

Ethyl glucuronide is a direct metabolite of ethanol and can be detected up to 80 hours in urine after ethanol ingestion. The cutoff for positive by immunoassay is set at 500 ng/mL. A positive result will be confirmed by liquid chromatography tandem mass spectrometry (LC-MS/MS).

Specimen Availability for Add-on Testing

2 Days

Specimen Stability

Refrigerated (preferred): 20 days
Ambient: 20 days
Frozen: 20 days

Day(s) Performed

Sun-Sat

Performing Lab - Department

TUKHS-BH-Mail Outs

CPT Code

80307; if reflexed, add 80321

LOINC Code

58375-7

Test Alias

N/A

Additional Information / Notes

N/A